* [PATCH v2 02/14] vlan: Rename VLAN_GROUP_ARRAY_LEN to VLAN_N_VID.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
VLAN_GROUP_ARRAY_LEN is simply the number of possible vlan VIDs.
Since vlan groups will soon be more of an implementation detail
for vlan devices, rename the constant to be descriptive of its
actual purpose.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
drivers/net/benet/be.h | 2 +-
drivers/net/benet/be_main.c | 2 +-
drivers/net/e1000/e1000_main.c | 2 +-
drivers/net/e1000e/netdev.c | 2 +-
drivers/net/igb/igb_main.c | 2 +-
drivers/net/igbvf/netdev.c | 2 +-
drivers/net/ixgb/ixgb_main.c | 2 +-
drivers/net/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ixgbevf/ixgbevf_main.c | 2 +-
drivers/net/qlcnic/qlcnic_main.c | 2 +-
drivers/net/vmxnet3/vmxnet3_drv.c | 2 +-
drivers/net/vxge/vxge-main.c | 2 +-
drivers/s390/net/qeth_l3_main.c | 6 +++---
include/linux/if_vlan.h | 4 ++--
net/8021q/vlan.c | 16 ++++++++--------
net/bridge/netfilter/ebt_vlan.c | 4 ++--
16 files changed, 27 insertions(+), 27 deletions(-)
diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
index 1afabb1..59a17b5 100644
--- a/drivers/net/benet/be.h
+++ b/drivers/net/benet/be.h
@@ -263,7 +263,7 @@ struct be_adapter {
struct vlan_group *vlan_grp;
u16 vlans_added;
u16 max_vlans; /* Number of vlans supported */
- u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
+ u8 vlan_tag[VLAN_N_VID];
struct be_dma_mem mc_cmd_mem;
struct be_dma_mem stats_cmd;
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 9a1cd28..4b59e53 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -626,7 +626,7 @@ static int be_vid_config(struct be_adapter *adapter, bool vf, u32 vf_num)
if (adapter->vlans_added <= adapter->max_vlans) {
/* Construct VLAN Table to give to HW */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
if (adapter->vlan_tag[i]) {
vtag[ntags] = cpu_to_le16(i);
ntags++;
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index cb3f84b..232ac2d 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -4541,7 +4541,7 @@ static void e1000_restore_vlan(struct e1000_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
e1000_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 992b622..5d6cdea 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2545,7 +2545,7 @@ static void e1000_restore_vlan(struct e1000_adapter *adapter)
if (!adapter->vlgrp)
return;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
e1000_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index b8dccc0..0f0939c 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -6153,7 +6153,7 @@ static void igb_restore_vlan(struct igb_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
igb_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index 6693323..ebfaa68 100644
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -1254,7 +1254,7 @@ static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
if (!adapter->vlgrp)
return;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
igbvf_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index 80e6257..666207a 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -2223,7 +2223,7 @@ ixgb_restore_vlan(struct ixgb_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgb_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 790a0da..1d42442 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3185,7 +3185,7 @@ static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 0866a1c..78bfbe4 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -1495,7 +1495,7 @@ static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgbevf_vlan_rx_add_vid(adapter->netdev, vid);
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 4aada0b..f047c7c 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -4093,7 +4093,7 @@ qlcnic_restore_indev_addr(struct net_device *netdev, unsigned long event)
if (!adapter->vlgrp)
return;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
dev = vlan_group_get_device(adapter->vlgrp, vid);
if (!dev)
continue;
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 198ce92..b1de73b 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1634,7 +1634,7 @@ vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
bool activeVlan = false;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (vlan_group_get_device(adapter->vlan_grp, vid)) {
VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
activeVlan = true;
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index 5378b84..0bda7fe 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -1862,7 +1862,7 @@ enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
if (vdev->vlgrp && vpath->is_open) {
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ for (vid = 0; vid < VLAN_N_VID; vid++) {
if (!vlan_group_get_device(vdev->vlgrp, vid))
continue;
/* Add these vlan to the vid table */
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index c094707..74d1401 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1820,7 +1820,7 @@ static void qeth_l3_add_vlan_mc(struct qeth_card *card)
return;
vg = card->vlangrp;
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
struct net_device *netdev = vlan_group_get_device(vg, i);
if (netdev == NULL ||
!(netdev->flags & IFF_UP))
@@ -1883,7 +1883,7 @@ static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
return;
vg = card->vlangrp;
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
struct net_device *netdev = vlan_group_get_device(vg, i);
if (netdev == NULL ||
!(netdev->flags & IFF_UP))
@@ -2247,7 +2247,7 @@ static int qeth_l3_verify_vlan_dev(struct net_device *dev,
if (!vg)
return rc;
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
if (vlan_group_get_device(vg, i) == dev) {
rc = QETH_VLAN_CARD;
break;
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index a523207..494cce8 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -68,6 +68,7 @@ static inline struct vlan_ethhdr *vlan_eth_hdr(const struct sk_buff *skb)
#define VLAN_CFI_MASK 0x1000 /* Canonical Format Indicator */
#define VLAN_TAG_PRESENT VLAN_CFI_MASK
#define VLAN_VID_MASK 0x0fff /* VLAN Identifier */
+#define VLAN_N_VID 4096
/* found in socket.c */
extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));
@@ -76,9 +77,8 @@ extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));
* depends on completely exhausting the VLAN identifier space. Thus
* it gives constant time look-up, but in many cases it wastes memory.
*/
-#define VLAN_GROUP_ARRAY_LEN 4096
#define VLAN_GROUP_ARRAY_SPLIT_PARTS 8
-#define VLAN_GROUP_ARRAY_PART_LEN (VLAN_GROUP_ARRAY_LEN/VLAN_GROUP_ARRAY_SPLIT_PARTS)
+#define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
struct vlan_group {
struct net_device *real_dev; /* The ethernet(like) device
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 25c2133..54f22d8 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -439,7 +439,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
switch (event) {
case NETDEV_CHANGE:
/* Propagate real device state to vlan devices */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -450,7 +450,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_CHANGEADDR:
/* Adjust unicast filters on underlying device */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -464,7 +464,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
break;
case NETDEV_CHANGEMTU:
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -478,7 +478,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_FEAT_CHANGE:
/* Propagate device features to underlying device */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -490,7 +490,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_DOWN:
/* Put all VLANs for this dev in the down state too. */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -508,7 +508,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_UP:
/* Put all VLANs for this dev in the up state too. */
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -532,7 +532,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
/* Delete all VLANs for this dev. */
grp->killall = 1;
- for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
continue;
@@ -540,7 +540,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
/* unregistration of last vlan destroys group, abort
* afterwards */
if (grp->nr_vlans == 1)
- i = VLAN_GROUP_ARRAY_LEN;
+ i = VLAN_N_VID;
unregister_vlan_dev(vlandev, &list);
}
diff --git a/net/bridge/netfilter/ebt_vlan.c b/net/bridge/netfilter/ebt_vlan.c
index cc11d6b..eae67bf 100644
--- a/net/bridge/netfilter/ebt_vlan.c
+++ b/net/bridge/netfilter/ebt_vlan.c
@@ -118,10 +118,10 @@ static int ebt_vlan_mt_check(const struct xt_mtchk_param *par)
* 0 - The null VLAN ID.
* 1 - The default Port VID (PVID)
* 0x0FFF - Reserved for implementation use.
- * if_vlan.h: VLAN_GROUP_ARRAY_LEN 4096. */
+ * if_vlan.h: VLAN_N_VID 4096. */
if (GET_BITMASK(EBT_VLAN_ID)) {
if (!!info->id) { /* if id!=0 => check vid range */
- if (info->id > VLAN_GROUP_ARRAY_LEN) {
+ if (info->id > VLAN_N_VID) {
pr_debug("id %d is out of range (1-4096)\n",
info->id);
return -EINVAL;
--
1.7.1
^ permalink raw reply related
* [PATCH v2 03/14] vlan: Don't check for vlan group before vlan_tx_tag_present.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Many (but not all) drivers check to see whether there is a vlan
group configured before using a tag stored in the skb. There's
not much point in this check since it just throws away data that
should only be present in the expected circumstances. However,
it will soon be legal and expected to get a vlan tag when no
vlan group is configured, so remove this check from all drivers
to avoid dropping the tags.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
drivers/net/8139cp.c | 2 +-
drivers/net/amd8111e.c | 2 +-
drivers/net/atl1c/atl1c_main.c | 2 +-
drivers/net/atl1e/atl1e_main.c | 2 +-
drivers/net/atlx/atl1.c | 2 +-
drivers/net/atlx/atl2.c | 2 +-
drivers/net/benet/be_main.c | 7 +++----
drivers/net/bna/bnad.c | 2 +-
drivers/net/bnx2.c | 2 +-
drivers/net/bnx2x/bnx2x_cmn.c | 3 +--
drivers/net/chelsio/sge.c | 2 +-
drivers/net/cxgb3/sge.c | 4 ++--
drivers/net/e1000/e1000_main.c | 2 +-
drivers/net/e1000e/netdev.c | 2 +-
drivers/net/ehea/ehea_main.c | 2 +-
drivers/net/enic/enic_main.c | 2 +-
drivers/net/forcedeth.c | 11 ++++-------
drivers/net/gianfar.c | 4 ++--
drivers/net/igb/igb_main.c | 2 +-
drivers/net/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ixgbevf/ixgbevf_main.c | 2 +-
drivers/net/mlx4/en_tx.c | 4 ++--
drivers/net/qlge/qlge_main.c | 2 +-
drivers/net/r8169.c | 2 +-
drivers/net/s2io.c | 2 +-
drivers/net/sky2.c | 2 +-
drivers/net/tg3.c | 4 ++--
drivers/net/via-velocity.c | 2 +-
drivers/net/vxge/vxge-main.c | 2 +-
29 files changed, 38 insertions(+), 43 deletions(-)
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index 237d4ea..ac422cd 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -754,7 +754,7 @@ static netdev_tx_t cp_start_xmit (struct sk_buff *skb,
}
#if CP_VLAN_TAG_USED
- if (cp->vlgrp && vlan_tx_tag_present(skb))
+ if (vlan_tx_tag_present(skb))
vlan_tag = TxVlanTag | swab16(vlan_tx_tag_get(skb));
#endif
diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c
index 58a0ab4..2ca880b 100644
--- a/drivers/net/amd8111e.c
+++ b/drivers/net/amd8111e.c
@@ -1315,7 +1315,7 @@ static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
lp->tx_ring[tx_index].tx_flags = 0;
#if AMD8111E_VLAN_TAG_USED
- if((lp->vlgrp != NULL) && vlan_tx_tag_present(skb)){
+ if (vlan_tx_tag_present(skb)) {
lp->tx_ring[tx_index].tag_ctrl_cmd |=
cpu_to_le16(TCC_VLAN_INSERT);
lp->tx_ring[tx_index].tag_ctrl_info =
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index 553230e..99ffcf6 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -2243,7 +2243,7 @@ static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb,
return NETDEV_TX_OK;
}
- if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
+ if (unlikely(vlan_tx_tag_present(skb))) {
u16 vlan = vlan_tx_tag_get(skb);
__le16 tag;
diff --git a/drivers/net/atl1e/atl1e_main.c b/drivers/net/atl1e/atl1e_main.c
index 56ace3f..ef6349b 100644
--- a/drivers/net/atl1e/atl1e_main.c
+++ b/drivers/net/atl1e/atl1e_main.c
@@ -1814,7 +1814,7 @@ static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb,
tpd = atl1e_get_tpd(adapter);
- if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
+ if (unlikely(vlan_tx_tag_present(skb))) {
u16 vlan_tag = vlan_tx_tag_get(skb);
u16 atl1e_vlan_tag;
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index b8c053f..dbd27b8 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -2408,7 +2408,7 @@ static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
(u16) atomic_read(&tpd_ring->next_to_use));
memset(ptpd, 0, sizeof(struct tx_packet_desc));
- if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
vlan_tag = vlan_tx_tag_get(skb);
vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
((vlan_tag >> 9) & 0x8);
diff --git a/drivers/net/atlx/atl2.c b/drivers/net/atlx/atl2.c
index 29c0265..35b14be 100644
--- a/drivers/net/atlx/atl2.c
+++ b/drivers/net/atlx/atl2.c
@@ -870,7 +870,7 @@ static netdev_tx_t atl2_xmit_frame(struct sk_buff *skb,
offset = ((u32)(skb->len-copy_len + 3) & ~3);
}
#ifdef NETIF_F_HW_VLAN_TX
- if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
u16 vlan_tag = vlan_tx_tag_get(skb);
vlan_tag = (vlan_tag << 4) |
(vlan_tag >> 13) |
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 4b59e53..d5e7968 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -430,7 +430,7 @@ static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
}
static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
- bool vlan, u32 wrb_cnt, u32 len)
+ u32 wrb_cnt, u32 len)
{
memset(hdr, 0, sizeof(*hdr));
@@ -449,7 +449,7 @@ static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
}
- if (vlan && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
hdr, vlan_tx_tag_get(skb));
@@ -532,8 +532,7 @@ static int make_tx_wrbs(struct be_adapter *adapter,
queue_head_inc(txq);
}
- wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
- wrb_cnt, copied);
+ wrb_fill_hdr(hdr, first_skb, wrb_cnt, copied);
be_dws_cpu_to_le(hdr, sizeof(*hdr));
return copied;
diff --git a/drivers/net/bna/bnad.c b/drivers/net/bna/bnad.c
index 74c64d6..7e839b9 100644
--- a/drivers/net/bna/bnad.c
+++ b/drivers/net/bna/bnad.c
@@ -2501,7 +2501,7 @@ bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
htons((skb_is_gso(skb) ? BNA_TXQ_WI_SEND_LSO :
BNA_TXQ_WI_SEND));
- if (bnad->vlan_grp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
vlan_tag = (u16) vlan_tx_tag_get(skb);
flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
}
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ae894bc..363ca8b 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6429,7 +6429,7 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
#ifdef BCM_VLAN
- if (bp->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
vlan_tag_flags |=
(TX_BD_FLAGS_VLAN_TAG | (vlan_tx_tag_get(skb) << 16));
}
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index 1966cee..6905b2e 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -2026,8 +2026,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd);
#ifdef BCM_VLAN
- if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb) &&
- (bp->flags & HW_VLAN_TX_FLAG)) {
+ if (vlan_tx_tag_present(skb)) {
tx_start_bd->vlan_or_ethertype =
cpu_to_le16(vlan_tx_tag_get(skb));
tx_start_bd->bd_flags.as_bitfield |=
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 340b537..70221ca 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1870,7 +1870,7 @@ netdev_tx_t t1_start_xmit(struct sk_buff *skb, struct net_device *dev)
cpl->iff = dev->if_port;
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
- if (adapter->vlan_grp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
cpl->vlan_valid = 1;
cpl->vlan = htons(vlan_tx_tag_get(skb));
st->vlan_insert++;
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index c5a142b..7ad4625 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -1145,7 +1145,7 @@ static void write_tx_pkt_wr(struct adapter *adap, struct sk_buff *skb,
cpl->len = htonl(skb->len);
cntrl = V_TXPKT_INTF(pi->port_id);
- if (vlan_tx_tag_present(skb) && pi->vlan_grp)
+ if (vlan_tx_tag_present(skb))
cntrl |= F_TXPKT_VLAN_VLD | V_TXPKT_VLAN(vlan_tx_tag_get(skb));
tso_info = V_LSO_MSS(skb_shinfo(skb)->gso_size);
@@ -1279,7 +1279,7 @@ netdev_tx_t t3_eth_xmit(struct sk_buff *skb, struct net_device *dev)
qs->port_stats[SGE_PSTAT_TX_CSUM]++;
if (skb_shinfo(skb)->gso_size)
qs->port_stats[SGE_PSTAT_TSO]++;
- if (vlan_tx_tag_present(skb) && pi->vlan_grp)
+ if (vlan_tx_tag_present(skb))
qs->port_stats[SGE_PSTAT_VLANINS]++;
/*
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 232ac2d..a117f2a 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -3119,7 +3119,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
}
}
- if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
+ if (unlikely(vlan_tx_tag_present(skb))) {
tx_flags |= E1000_TX_FLAGS_VLAN;
tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
}
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 5d6cdea..ec8cf3f 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -4800,7 +4800,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
if (e1000_maybe_stop_tx(netdev, count + 2))
return NETDEV_TX_BUSY;
- if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
tx_flags |= E1000_TX_FLAGS_VLAN;
tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
}
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 6932578..a0d1170 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -2272,7 +2272,7 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
pr->swqe_id_counter += 1;
- if (port->vgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
swqe->vlan_tag = vlan_tx_tag_get(skb);
}
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index a1f92f1..cfb6db4 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -743,7 +743,7 @@ static inline void enic_queue_wq_skb(struct enic *enic,
int vlan_tag_insert = 0;
int loopback = 0;
- if (enic->vlan_group && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
/* VLAN tag from trunking driver */
vlan_tag_insert = 1;
vlan_tag = vlan_tx_tag_get(skb);
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index ddac63c..0fa1776 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -2321,14 +2321,11 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
/* vlan tag */
- if (likely(!np->vlangrp)) {
+ if (vlan_tx_tag_present(skb))
+ start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
+ vlan_tx_tag_get(skb));
+ else
start_tx->txvlan = 0;
- } else {
- if (vlan_tx_tag_present(skb))
- start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb));
- else
- start_tx->txvlan = 0;
- }
spin_lock_irqsave(&np->lock, flags);
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 6180089..4c4cc80 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -2075,7 +2075,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* make space for additional header when fcb is needed */
if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
- (priv->vlgrp && vlan_tx_tag_present(skb)) ||
+ vlan_tx_tag_present(skb) ||
unlikely(do_tstamp)) &&
(skb_headroom(skb) < GMAC_FCB_LEN)) {
struct sk_buff *skb_new;
@@ -2161,7 +2161,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
gfar_tx_checksum(skb, fcb);
}
- if (priv->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
if (unlikely(NULL == fcb)) {
fcb = gfar_add_fcb(skb);
lstatus |= BD_LFLAG(TXBD_TOE);
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 0f0939c..75155a2 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -4128,7 +4128,7 @@ netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff *skb,
tx_flags |= IGB_TX_FLAGS_TSTAMP;
}
- if (vlan_tx_tag_present(skb) && adapter->vlgrp) {
+ if (vlan_tx_tag_present(skb)) {
tx_flags |= IGB_TX_FLAGS_VLAN;
tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
}
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 1d42442..998debe 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6311,7 +6311,7 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, struct net_device *netdev
int count = 0;
unsigned int f;
- if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
tx_flags |= vlan_tx_tag_get(skb);
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 78bfbe4..dc03c96 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -3134,7 +3134,7 @@ static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
tx_ring = &adapter->tx_ring[r_idx];
- if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
tx_flags |= vlan_tx_tag_get(skb);
tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
tx_flags |= IXGBE_TX_FLAGS_VLAN;
diff --git a/drivers/net/mlx4/en_tx.c b/drivers/net/mlx4/en_tx.c
index 98dd620..a680cd4 100644
--- a/drivers/net/mlx4/en_tx.c
+++ b/drivers/net/mlx4/en_tx.c
@@ -583,7 +583,7 @@ u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb)
/* If we support per priority flow control and the packet contains
* a vlan tag, send the packet to the TX ring assigned to that priority
*/
- if (priv->prof->rx_ppp && priv->vlgrp && vlan_tx_tag_present(skb)) {
+ if (priv->prof->rx_ppp && vlan_tx_tag_present(skb)) {
vlan_tag = vlan_tx_tag_get(skb);
return MLX4_EN_NUM_TX_RINGS + (vlan_tag >> 13);
}
@@ -634,7 +634,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
tx_ind = skb->queue_mapping;
ring = &priv->tx_ring[tx_ind];
- if (priv->vlgrp && vlan_tx_tag_present(skb))
+ if (vlan_tx_tag_present(skb))
vlan_tag = vlan_tx_tag_get(skb);
/* Check available TXBBs And 2K spare for prefetch */
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 4ffebe8..ba0053d 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -2572,7 +2572,7 @@ static netdev_tx_t qlge_send(struct sk_buff *skb, struct net_device *ndev)
mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
- if (qdev->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
netif_printk(qdev, tx_queued, KERN_DEBUG, qdev->ndev,
"Adding a vlan tag %d.\n", vlan_tx_tag_get(skb));
mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 1760533..242748b 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1034,7 +1034,7 @@ static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
struct sk_buff *skb)
{
- return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
+ return (vlan_tx_tag_present(skb)) ?
TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
}
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index c70ad51..ecc25aa 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -4101,7 +4101,7 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
}
queue = 0;
- if (sp->vlgrp && vlan_tx_tag_present(skb))
+ if (vlan_tx_tag_present(skb))
vlan_tag = vlan_tx_tag_get(skb);
if (sp->config.tx_steering_type == TX_DEFAULT_STEERING) {
if (skb->protocol == htons(ETH_P_IP)) {
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 3ef9b67..d657708 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1782,7 +1782,7 @@ static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
ctrl = 0;
#ifdef SKY2_VLAN_TAG_USED
/* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
- if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
if (!le) {
le = get_tx_le(sky2, &slot);
le->addr = 0;
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 5b4c510..22720ee 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5745,7 +5745,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb,
}
#if TG3_VLAN_TAG_USED
- if (tp->vlgrp != NULL && vlan_tx_tag_present(skb))
+ if (vlan_tx_tag_present(skb))
base_flags |= (TXD_FLAG_VLAN |
(vlan_tx_tag_get(skb) << 16));
#endif
@@ -5991,7 +5991,7 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb,
}
}
#if TG3_VLAN_TAG_USED
- if (tp->vlgrp != NULL && vlan_tx_tag_present(skb))
+ if (vlan_tx_tag_present(skb))
base_flags |= (TXD_FLAG_VLAN |
(vlan_tx_tag_get(skb) << 16));
#endif
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index f199561..cab96ad 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -2592,7 +2592,7 @@ static netdev_tx_t velocity_xmit(struct sk_buff *skb,
td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
- if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
td_ptr->tdesc1.TCR |= TCR0_VETAG;
}
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index 0bda7fe..a69542e 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -822,7 +822,7 @@ vxge_xmit(struct sk_buff *skb, struct net_device *dev)
dev->name, __func__, __LINE__,
fifo_hw, dtr, dtr_priv);
- if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tx_tag_present(skb)) {
u16 vlan_tag = vlan_tx_tag_get(skb);
vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
}
--
1.7.1
^ permalink raw reply related
* [PATCH v2 04/14] vlan: Enable software emulation for vlan accleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Currently users of hardware vlan accleration need to know whether
the device supports it before generating packets. However, vlan
acceleration will soon be available in a more flexible manner so
knowing ahead of time becomes much more difficult. This adds
a software fallback path for vlan packets on devices without the
necessary offloading support, similar to other types of hardware
accleration.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
include/linux/netdevice.h | 14 +++++++++++---
net/core/dev.c | 36 +++++++++++++++++++++++++++++++++---
2 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 880d565..2861565 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2248,9 +2248,17 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features)
static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
{
- return skb_is_gso(skb) &&
- (!skb_gso_ok(skb, dev->features) ||
- unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
+ if (skb_is_gso(skb)) {
+ int features = dev->features;
+
+ if (skb->protocol == htons(ETH_P_8021Q) || skb->vlan_tci)
+ features &= dev->vlan_features;
+
+ return (!skb_gso_ok(skb, features) ||
+ unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
+ }
+
+ return 0;
}
static inline void netif_set_gso_max_size(struct net_device *dev,
diff --git a/net/core/dev.c b/net/core/dev.c
index 4c3ac53..1bfd96b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1694,7 +1694,12 @@ static bool can_checksum_protocol(unsigned long features, __be16 protocol)
static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
{
- if (can_checksum_protocol(dev->features, skb->protocol))
+ int features = dev->features;
+
+ if (vlan_tx_tag_present(skb))
+ features &= dev->vlan_features;
+
+ if (can_checksum_protocol(features, skb->protocol))
return true;
if (skb->protocol == htons(ETH_P_8021Q)) {
@@ -1793,6 +1798,16 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
__be16 type = skb->protocol;
int err;
+ if (type == htons(ETH_P_8021Q)) {
+ struct vlan_ethhdr *veh;
+
+ if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
+ return ERR_PTR(-EINVAL);
+
+ veh = (struct vlan_ethhdr *)skb->data;
+ type = veh->h_vlan_encapsulated_proto;
+ }
+
skb_reset_mac_header(skb);
skb->mac_len = skb->network_header - skb->mac_header;
__skb_pull(skb, skb->mac_len);
@@ -1964,9 +1979,14 @@ static inline void skb_orphan_try(struct sk_buff *skb)
static inline int skb_needs_linearize(struct sk_buff *skb,
struct net_device *dev)
{
+ int features = dev->features;
+
+ if (skb->protocol == htons(ETH_P_8021Q) || vlan_tx_tag_present(skb))
+ features &= dev->vlan_features;
+
return skb_is_nonlinear(skb) &&
- ((skb_has_frag_list(skb) && !(dev->features & NETIF_F_FRAGLIST)) ||
- (skb_shinfo(skb)->nr_frags && (!(dev->features & NETIF_F_SG) ||
+ ((skb_has_frag_list(skb) && !(features & NETIF_F_FRAGLIST)) ||
+ (skb_shinfo(skb)->nr_frags && (!(features & NETIF_F_SG) ||
illegal_highdma(dev, skb))));
}
@@ -1989,6 +2009,15 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
skb_orphan_try(skb);
+ if (vlan_tx_tag_present(skb) &&
+ !(dev->features & NETIF_F_HW_VLAN_TX)) {
+ skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb));
+ if (unlikely(!skb))
+ goto out;
+
+ skb->vlan_tci = 0;
+ }
+
if (netif_needs_gso(dev, skb)) {
if (unlikely(dev_gso_segment(skb)))
goto out_kfree_skb;
@@ -2050,6 +2079,7 @@ out_kfree_gso_skb:
skb->destructor = DEV_GSO_CB(skb)->destructor;
out_kfree_skb:
kfree_skb(skb);
+out:
return rc;
}
--
1.7.1
^ permalink raw reply related
* [PATCH v2 05/14] vlan: Avoid hash table lookup to find group.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
A struct net_device always maps to zero or one vlan groups and we
always know the device when we are looking up a group. We currently
do a hash table lookup on the device to find the group but it is
much simpler to just store a pointer.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
include/linux/if_vlan.h | 19 +++++++++++++
include/linux/netdevice.h | 5 +++-
net/8021q/vlan.c | 64 +++++++--------------------------------------
net/8021q/vlan.h | 17 ------------
net/8021q/vlan_dev.c | 2 +-
5 files changed, 34 insertions(+), 73 deletions(-)
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 494cce8..4047781 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -16,6 +16,7 @@
#ifdef __KERNEL__
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
#define VLAN_HLEN 4 /* The additional bytes (on top of the Ethernet header)
* that VLAN requires.
@@ -114,6 +115,18 @@ static inline void vlan_group_set_device(struct vlan_group *vg,
#define vlan_tx_tag_get(__skb) ((__skb)->vlan_tci & ~VLAN_TAG_PRESENT)
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+/* Must be invoked with rcu_read_lock or with RTNL. */
+static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
+ u16 vlan_id)
+{
+ struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp);
+
+ if (grp)
+ return vlan_group_get_device(grp, vlan_id);
+
+ return NULL;
+}
+
extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);
extern u16 vlan_dev_vlan_id(const struct net_device *dev);
@@ -128,6 +141,12 @@ vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
unsigned int vlan_tci);
#else
+static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
+ u16 vlan_id)
+{
+ return NULL;
+}
+
static inline struct net_device *vlan_dev_real_dev(const struct net_device *dev)
{
BUG();
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 2861565..9c78312 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -942,7 +942,10 @@ struct net_device {
/* Protocol specific pointers */
-
+
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+ struct vlan_group *vlgrp; /* VLAN group */
+#endif
#ifdef CONFIG_NET_DSA
void *dsa_ptr; /* dsa specific data */
#endif
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 54f22d8..f862dcc 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -44,9 +44,6 @@
int vlan_net_id __read_mostly;
-/* Our listing of VLAN group(s) */
-static struct hlist_head vlan_group_hash[VLAN_GRP_HASH_SIZE];
-
const char vlan_fullname[] = "802.1Q VLAN Support";
const char vlan_version[] = DRV_VERSION;
static const char vlan_copyright[] = "Ben Greear <greearb@candelatech.com>";
@@ -59,40 +56,6 @@ static struct packet_type vlan_packet_type __read_mostly = {
/* End of global variables definitions. */
-static inline unsigned int vlan_grp_hashfn(unsigned int idx)
-{
- return ((idx >> VLAN_GRP_HASH_SHIFT) ^ idx) & VLAN_GRP_HASH_MASK;
-}
-
-/* Must be invoked with RCU read lock (no preempt) */
-static struct vlan_group *__vlan_find_group(struct net_device *real_dev)
-{
- struct vlan_group *grp;
- struct hlist_node *n;
- int hash = vlan_grp_hashfn(real_dev->ifindex);
-
- hlist_for_each_entry_rcu(grp, n, &vlan_group_hash[hash], hlist) {
- if (grp->real_dev == real_dev)
- return grp;
- }
-
- return NULL;
-}
-
-/* Find the protocol handler. Assumes VID < VLAN_VID_MASK.
- *
- * Must be invoked with RCU read lock (no preempt)
- */
-struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id)
-{
- struct vlan_group *grp = __vlan_find_group(real_dev);
-
- if (grp)
- return vlan_group_get_device(grp, vlan_id);
-
- return NULL;
-}
-
static void vlan_group_free(struct vlan_group *grp)
{
int i;
@@ -111,8 +74,6 @@ static struct vlan_group *vlan_group_alloc(struct net_device *real_dev)
return NULL;
grp->real_dev = real_dev;
- hlist_add_head_rcu(&grp->hlist,
- &vlan_group_hash[vlan_grp_hashfn(real_dev->ifindex)]);
return grp;
}
@@ -151,7 +112,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
ASSERT_RTNL();
- grp = __vlan_find_group(real_dev);
+ grp = real_dev->vlgrp;
BUG_ON(!grp);
/* Take it out of our own structures, but be sure to interlock with
@@ -173,11 +134,10 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
if (grp->nr_vlans == 0) {
vlan_gvrp_uninit_applicant(real_dev);
+ rcu_assign_pointer(real_dev->vlgrp, NULL);
if (real_dev->features & NETIF_F_HW_VLAN_RX)
ops->ndo_vlan_rx_register(real_dev, NULL);
- hlist_del_rcu(&grp->hlist);
-
/* Free the group, after all cpu's are done. */
call_rcu(&grp->rcu, vlan_rcu_free);
}
@@ -207,7 +167,7 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
return -EOPNOTSUPP;
}
- if (__find_vlan_dev(real_dev, vlan_id) != NULL)
+ if (vlan_find_dev(real_dev, vlan_id) != NULL)
return -EEXIST;
return 0;
@@ -222,7 +182,7 @@ int register_vlan_dev(struct net_device *dev)
struct vlan_group *grp, *ngrp = NULL;
int err;
- grp = __vlan_find_group(real_dev);
+ grp = real_dev->vlgrp;
if (!grp) {
ngrp = grp = vlan_group_alloc(real_dev);
if (!grp)
@@ -252,8 +212,11 @@ int register_vlan_dev(struct net_device *dev)
vlan_group_set_device(grp, vlan_id, dev);
grp->nr_vlans++;
- if (ngrp && real_dev->features & NETIF_F_HW_VLAN_RX)
- ops->ndo_vlan_rx_register(real_dev, ngrp);
+ if (ngrp) {
+ if (real_dev->features & NETIF_F_HW_VLAN_RX)
+ ops->ndo_vlan_rx_register(real_dev, ngrp);
+ rcu_assign_pointer(real_dev->vlgrp, ngrp);
+ }
if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
ops->ndo_vlan_rx_add_vid(real_dev, vlan_id);
@@ -264,7 +227,6 @@ out_uninit_applicant:
vlan_gvrp_uninit_applicant(real_dev);
out_free_group:
if (ngrp) {
- hlist_del_rcu(&ngrp->hlist);
/* Free the group, after all cpu's are done. */
call_rcu(&ngrp->rcu, vlan_rcu_free);
}
@@ -428,7 +390,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0);
}
- grp = __vlan_find_group(dev);
+ grp = dev->vlgrp;
if (!grp)
goto out;
@@ -746,8 +708,6 @@ err0:
static void __exit vlan_cleanup_module(void)
{
- unsigned int i;
-
vlan_ioctl_set(NULL);
vlan_netlink_fini();
@@ -755,10 +715,6 @@ static void __exit vlan_cleanup_module(void)
dev_remove_pack(&vlan_packet_type);
- /* This table must be empty if there are no module references left. */
- for (i = 0; i < VLAN_GRP_HASH_SIZE; i++)
- BUG_ON(!hlist_empty(&vlan_group_hash[i]));
-
unregister_pernet_subsys(&vlan_net_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 8d9503a..db01b31 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -72,23 +72,6 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
return netdev_priv(dev);
}
-#define VLAN_GRP_HASH_SHIFT 5
-#define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT)
-#define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1)
-
-/* Find a VLAN device by the MAC address of its Ethernet device, and
- * it's VLAN ID. The default configuration is to have VLAN's scope
- * to be box-wide, so the MAC will be ignored. The mac will only be
- * looked at if we are configured to have a separate set of VLANs per
- * each MAC addressable interface. Note that this latter option does
- * NOT follow the spec for VLANs, but may be useful for doing very
- * large quantities of VLAN MUX/DEMUX onto FrameRelay or ATM PVCs.
- *
- * Must be invoked with rcu_read_lock (ie preempt disabled)
- * or with RTNL.
- */
-struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id);
-
/* found in vlan_dev.c */
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index f54251e..14e3d1f 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -158,7 +158,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
vlan_id = vlan_tci & VLAN_VID_MASK;
rcu_read_lock();
- vlan_dev = __find_vlan_dev(dev, vlan_id);
+ vlan_dev = vlan_find_dev(dev, vlan_id);
/* If the VLAN device is defined, we use it.
* If not, and the VID is 0, it is a 802.1p packet (not
--
1.7.1
^ permalink raw reply related
* [PATCH v2 06/14] vlan: Centralize handling of hardware acceleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Currently each driver that is capable of vlan hardware acceleration
must be aware of the vlan groups that are configured and then pass
the stripped tag to a specialized receive function. This is
different from other types of hardware offload in that it places a
significant amount of knowledge in the driver itself rather keeping
it in the networking core.
This makes vlan offloading function more similarly to other forms
of offloading (such as checksum offloading or TSO) by doing the
following:
* On receive, stripped vlans are passed directly to the network
core, without attempting to check for vlan groups or reconstructing
the header if no group
* vlans are made less special by folding the logic into the main
receive routines
* On transmit, the device layer will add the vlan header in software
if the hardware doesn't support it, instead of spreading that logic
out in upper layers, such as bonding.
There are a number of advantages to this:
* Fixes all bugs with drivers incorrectly dropping vlan headers at once.
* Avoids having to disable VLAN acceleration when in promiscuous mode
(good for bridging since it always puts devices in promiscuous mode).
* Keeps VLAN tag separate until given to ultimate consumer, which
avoids needing to do header reconstruction as in tg3 unless absolutely
necessary.
* Consolidates common code in core networking.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
include/linux/if_vlan.h | 6 ++-
include/linux/netdevice.h | 1 -
net/8021q/vlan.c | 9 +---
net/8021q/vlan_core.c | 125 ++++++++++-----------------------------------
net/core/dev.c | 47 +++++------------
5 files changed, 48 insertions(+), 140 deletions(-)
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 4047781..a0d9786 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -132,7 +132,7 @@ extern u16 vlan_dev_vlan_id(const struct net_device *dev);
extern int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
u16 vlan_tci, int polling);
-extern void vlan_hwaccel_do_receive(struct sk_buff *skb);
+extern bool vlan_hwaccel_do_receive(struct sk_buff **skb);
extern gro_result_t
vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
unsigned int vlan_tci, struct sk_buff *skb);
@@ -166,8 +166,10 @@ static inline int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
return NET_XMIT_SUCCESS;
}
-static inline void vlan_hwaccel_do_receive(struct sk_buff *skb)
+static inline bool vlan_hwaccel_do_receive(struct sk_buff **skb)
{
+ BUG();
+ return false;
}
static inline gro_result_t
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 9c78312..ed7db7e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1768,7 +1768,6 @@ extern int netdev_rx_handler_register(struct net_device *dev,
void *rx_handler_data);
extern void netdev_rx_handler_unregister(struct net_device *dev);
-extern void netif_nit_deliver(struct sk_buff *skb);
extern int dev_valid_name(const char *name);
extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
extern int dev_ethtool(struct net *net, struct ifreq *);
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index f862dcc..05b867e 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -135,7 +135,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
vlan_gvrp_uninit_applicant(real_dev);
rcu_assign_pointer(real_dev->vlgrp, NULL);
- if (real_dev->features & NETIF_F_HW_VLAN_RX)
+ if (ops->ndo_vlan_rx_register)
ops->ndo_vlan_rx_register(real_dev, NULL);
/* Free the group, after all cpu's are done. */
@@ -156,11 +156,6 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
return -EOPNOTSUPP;
}
- if ((real_dev->features & NETIF_F_HW_VLAN_RX) && !ops->ndo_vlan_rx_register) {
- pr_info("8021q: device %s has buggy VLAN hw accel\n", name);
- return -EOPNOTSUPP;
- }
-
if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
(!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) {
pr_info("8021q: Device %s has buggy VLAN hw accel\n", name);
@@ -213,7 +208,7 @@ int register_vlan_dev(struct net_device *dev)
grp->nr_vlans++;
if (ngrp) {
- if (real_dev->features & NETIF_F_HW_VLAN_RX)
+ if (ops->ndo_vlan_rx_register)
ops->ndo_vlan_rx_register(real_dev, ngrp);
rcu_assign_pointer(real_dev->vlgrp, ngrp);
}
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index dee727c..69b2f79 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -4,54 +4,29 @@
#include <linux/netpoll.h>
#include "vlan.h"
-/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
-int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
- u16 vlan_tci, int polling)
+bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
{
+ struct sk_buff *skb = *skbp;
+ u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
struct net_device *vlan_dev;
- u16 vlan_id;
-
- if (netpoll_rx(skb))
- return NET_RX_DROP;
-
- if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master)))
- skb->deliver_no_wcard = 1;
+ struct vlan_rx_stats *rx_stats;
- skb->skb_iif = skb->dev->ifindex;
- __vlan_hwaccel_put_tag(skb, vlan_tci);
- vlan_id = vlan_tci & VLAN_VID_MASK;
- vlan_dev = vlan_group_get_device(grp, vlan_id);
-
- if (vlan_dev)
- skb->dev = vlan_dev;
- else if (vlan_id) {
- if (!(skb->dev->flags & IFF_PROMISC))
- goto drop;
- skb->pkt_type = PACKET_OTHERHOST;
+ vlan_dev = vlan_find_dev(skb->dev, vlan_id);
+ if (!vlan_dev) {
+ if (vlan_id)
+ skb->pkt_type = PACKET_OTHERHOST;
+ return false;
}
- return polling ? netif_receive_skb(skb) : netif_rx(skb);
+ skb = *skbp = skb_share_check(skb, GFP_ATOMIC);
+ if (unlikely(!skb))
+ return false;
-drop:
- atomic_long_inc(&skb->dev->rx_dropped);
- dev_kfree_skb_any(skb);
- return NET_RX_DROP;
-}
-EXPORT_SYMBOL(__vlan_hwaccel_rx);
-
-void vlan_hwaccel_do_receive(struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
- struct vlan_rx_stats *rx_stats;
-
- skb->dev = vlan_dev_real_dev(dev);
- netif_nit_deliver(skb);
-
- skb->dev = dev;
- skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
+ skb->dev = vlan_dev;
+ skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
skb->vlan_tci = 0;
- rx_stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats);
+ rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_rx_stats);
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
@@ -68,11 +43,13 @@ void vlan_hwaccel_do_receive(struct sk_buff *skb)
* This allows the VLAN to have a different MAC than the
* underlying device, and still route correctly. */
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
- dev->dev_addr))
+ vlan_dev->dev_addr))
skb->pkt_type = PACKET_HOST;
break;
}
u64_stats_update_end(&rx_stats->syncp);
+
+ return true;
}
struct net_device *vlan_dev_real_dev(const struct net_device *dev)
@@ -87,75 +64,27 @@ u16 vlan_dev_vlan_id(const struct net_device *dev)
}
EXPORT_SYMBOL(vlan_dev_vlan_id);
-static gro_result_t
-vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci, struct sk_buff *skb)
+/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
+int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
+ u16 vlan_tci, int polling)
{
- struct sk_buff *p;
- struct net_device *vlan_dev;
- u16 vlan_id;
-
- if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master)))
- skb->deliver_no_wcard = 1;
-
- skb->skb_iif = skb->dev->ifindex;
__vlan_hwaccel_put_tag(skb, vlan_tci);
- vlan_id = vlan_tci & VLAN_VID_MASK;
- vlan_dev = vlan_group_get_device(grp, vlan_id);
-
- if (vlan_dev)
- skb->dev = vlan_dev;
- else if (vlan_id) {
- if (!(skb->dev->flags & IFF_PROMISC))
- goto drop;
- skb->pkt_type = PACKET_OTHERHOST;
- }
-
- for (p = napi->gro_list; p; p = p->next) {
- unsigned long diffs;
-
- diffs = (unsigned long)p->dev ^ (unsigned long)skb->dev;
- diffs |= compare_ether_header(skb_mac_header(p),
- skb_gro_mac_header(skb));
- NAPI_GRO_CB(p)->same_flow = !diffs;
- NAPI_GRO_CB(p)->flush = 0;
- }
-
- return dev_gro_receive(napi, skb);
-
-drop:
- atomic_long_inc(&skb->dev->rx_dropped);
- return GRO_DROP;
+ return polling ? netif_receive_skb(skb) : netif_rx(skb);
}
+EXPORT_SYMBOL(__vlan_hwaccel_rx);
gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
unsigned int vlan_tci, struct sk_buff *skb)
{
- if (netpoll_rx_on(skb))
- return vlan_hwaccel_receive_skb(skb, grp, vlan_tci)
- ? GRO_DROP : GRO_NORMAL;
-
- skb_gro_reset_offset(skb);
-
- return napi_skb_finish(vlan_gro_common(napi, grp, vlan_tci, skb), skb);
+ __vlan_hwaccel_put_tag(skb, vlan_tci);
+ return napi_gro_receive(napi, skb);
}
EXPORT_SYMBOL(vlan_gro_receive);
gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
unsigned int vlan_tci)
{
- struct sk_buff *skb = napi_frags_skb(napi);
-
- if (!skb)
- return GRO_DROP;
-
- if (netpoll_rx_on(skb)) {
- skb->protocol = eth_type_trans(skb, skb->dev);
- return vlan_hwaccel_receive_skb(skb, grp, vlan_tci)
- ? GRO_DROP : GRO_NORMAL;
- }
-
- return napi_frags_finish(napi, skb,
- vlan_gro_common(napi, grp, vlan_tci, skb));
+ __vlan_hwaccel_put_tag(napi->skb, vlan_tci);
+ return napi_gro_frags(napi);
}
EXPORT_SYMBOL(vlan_gro_frags);
diff --git a/net/core/dev.c b/net/core/dev.c
index 1bfd96b..97fd6bc 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2789,33 +2789,6 @@ out:
}
#endif
-/*
- * netif_nit_deliver - deliver received packets to network taps
- * @skb: buffer
- *
- * This function is used to deliver incoming packets to network
- * taps. It should be used when the normal netif_receive_skb path
- * is bypassed, for example because of VLAN acceleration.
- */
-void netif_nit_deliver(struct sk_buff *skb)
-{
- struct packet_type *ptype;
-
- if (list_empty(&ptype_all))
- return;
-
- skb_reset_network_header(skb);
- skb_reset_transport_header(skb);
- skb->mac_len = skb->network_header - skb->mac_header;
-
- rcu_read_lock();
- list_for_each_entry_rcu(ptype, &ptype_all, list) {
- if (!ptype->dev || ptype->dev == skb->dev)
- deliver_skb(skb, ptype, skb->dev);
- }
- rcu_read_unlock();
-}
-
/**
* netdev_rx_handler_register - register receive handler
* @dev: device to register a handler for
@@ -2925,9 +2898,6 @@ static int __netif_receive_skb(struct sk_buff *skb)
if (!netdev_tstamp_prequeue)
net_timestamp_check(skb);
- if (vlan_tx_tag_present(skb))
- vlan_hwaccel_do_receive(skb);
-
/* if we've gotten here through NAPI, check netpoll */
if (netpoll_receive_skb(skb))
return NET_RX_DROP;
@@ -2940,8 +2910,7 @@ static int __netif_receive_skb(struct sk_buff *skb)
* be delivered to pkt handlers that are exact matches. Also
* the deliver_no_wcard flag will be set. If packet handlers
* are sensitive to duplicate packets these skbs will need to
- * be dropped at the handler. The vlan accel path may have
- * already set the deliver_no_wcard flag.
+ * be dropped at the handler.
*/
null_or_orig = NULL;
orig_dev = skb->dev;
@@ -3000,6 +2969,18 @@ ncls:
goto out;
}
+ if (vlan_tx_tag_present(skb)) {
+ if (pt_prev) {
+ ret = deliver_skb(skb, pt_prev, orig_dev);
+ pt_prev = NULL;
+ }
+ if (vlan_hwaccel_do_receive(&skb)) {
+ ret = __netif_receive_skb(skb);
+ goto out;
+ } else if (unlikely(!skb))
+ goto out;
+ }
+
/*
* Make sure frames received on VLAN interfaces stacked on
* bonding interfaces still make their way to any base bonding
@@ -3264,6 +3245,7 @@ __napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
unsigned long diffs;
diffs = (unsigned long)p->dev ^ (unsigned long)skb->dev;
+ diffs |= p->vlan_tci ^ skb->vlan_tci;
diffs |= compare_ether_header(skb_mac_header(p),
skb_gro_mac_header(skb));
NAPI_GRO_CB(p)->same_flow = !diffs;
@@ -3323,6 +3305,7 @@ void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
{
__skb_pull(skb, skb_headlen(skb));
skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
+ skb->vlan_tci = 0;
napi->skb = skb;
}
--
1.7.1
^ permalink raw reply related
* [PATCH v2 08/14] bridge: Add support for TX vlan offload.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
If some of the underlying devices support it, enable vlan offload on
transmit for bridge devices. This allows senders to take advantage of the
hardware support, similar to other forms of acceleration.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
net/bridge/br_device.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index cf09fe5..17cb0b6 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -212,6 +212,11 @@ static int br_set_tx_csum(struct net_device *dev, u32 data)
return 0;
}
+static int br_set_flags(struct net_device *netdev, u32 data)
+{
+ return ethtool_op_set_flags(netdev, data, ETH_FLAG_TXVLAN);
+}
+
#ifdef CONFIG_NET_POLL_CONTROLLER
static void br_poll_controller(struct net_device *br_dev)
{
@@ -304,6 +309,7 @@ static const struct ethtool_ops br_ethtool_ops = {
.get_ufo = ethtool_op_get_ufo,
.set_ufo = ethtool_op_set_ufo,
.get_flags = ethtool_op_get_flags,
+ .set_flags = br_set_flags,
};
static const struct net_device_ops br_netdev_ops = {
@@ -343,5 +349,5 @@ void br_dev_setup(struct net_device *dev)
dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
NETIF_F_GSO_MASK | NETIF_F_NO_CSUM | NETIF_F_LLTX |
- NETIF_F_NETNS_LOCAL | NETIF_F_GSO;
+ NETIF_F_NETNS_LOCAL | NETIF_F_GSO | NETIF_F_HW_VLAN_TX;
}
--
1.7.1
^ permalink raw reply related
* [PATCH v2 09/14] bnx2: Update bnx2 to use new vlan accleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev, Michael Chan
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Make the bnx2 driver use the new vlan accleration model.
Signed-off-by: Jesse Gross <jesse@nicira.com>
CC: Michael Chan <mchan@broadcom.com>
---
drivers/net/bnx2.c | 97 +++++++++++++++-------------------------------------
drivers/net/bnx2.h | 4 --
2 files changed, 28 insertions(+), 73 deletions(-)
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 363ca8b..bf3c830 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -37,9 +37,6 @@
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-#define BCM_VLAN 1
-#endif
#include <net/ip.h>
#include <net/tcp.h>
#include <net/checksum.h>
@@ -3087,8 +3084,6 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
struct sw_bd *rx_buf, *next_rx_buf;
struct sk_buff *skb;
dma_addr_t dma_addr;
- u16 vtag = 0;
- int hw_vlan __maybe_unused = 0;
sw_ring_cons = RX_RING_IDX(sw_cons);
sw_ring_prod = RX_RING_IDX(sw_prod);
@@ -3168,23 +3163,8 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
goto next_rx;
if ((status & L2_FHDR_STATUS_L2_VLAN_TAG) &&
- !(bp->rx_mode & BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG)) {
- vtag = rx_hdr->l2_fhdr_vlan_tag;
-#ifdef BCM_VLAN
- if (bp->vlgrp)
- hw_vlan = 1;
- else
-#endif
- {
- struct vlan_ethhdr *ve = (struct vlan_ethhdr *)
- __skb_push(skb, 4);
-
- memmove(ve, skb->data + 4, ETH_ALEN * 2);
- ve->h_vlan_proto = htons(ETH_P_8021Q);
- ve->h_vlan_TCI = htons(vtag);
- len += 4;
- }
- }
+ !(bp->rx_mode & BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG))
+ __vlan_hwaccel_put_tag(skb, rx_hdr->l2_fhdr_vlan_tag);
skb->protocol = eth_type_trans(skb, bp->dev);
@@ -3211,14 +3191,7 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
skb->rxhash = rx_hdr->l2_fhdr_hash;
skb_record_rx_queue(skb, bnapi - &bp->bnx2_napi[0]);
-
-#ifdef BCM_VLAN
- if (hw_vlan)
- vlan_gro_receive(&bnapi->napi, bp->vlgrp, vtag, skb);
- else
-#endif
- napi_gro_receive(&bnapi->napi, skb);
-
+ napi_gro_receive(&bnapi->napi, skb);
rx_pkt++;
next_rx:
@@ -3533,13 +3506,9 @@ bnx2_set_rx_mode(struct net_device *dev)
rx_mode = bp->rx_mode & ~(BNX2_EMAC_RX_MODE_PROMISCUOUS |
BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG);
sort_mode = 1 | BNX2_RPM_SORT_USER0_BC_EN;
-#ifdef BCM_VLAN
- if (!bp->vlgrp && (bp->flags & BNX2_FLAG_CAN_KEEP_VLAN))
+ if (!(dev->features & NETIF_F_HW_VLAN_RX) &&
+ (bp->flags & BNX2_FLAG_CAN_KEEP_VLAN))
rx_mode |= BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG;
-#else
- if (bp->flags & BNX2_FLAG_CAN_KEEP_VLAN)
- rx_mode |= BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG;
-#endif
if (dev->flags & IFF_PROMISC) {
/* Promiscuous mode. */
rx_mode |= BNX2_EMAC_RX_MODE_PROMISCUOUS;
@@ -6365,29 +6334,6 @@ bnx2_tx_timeout(struct net_device *dev)
schedule_work(&bp->reset_task);
}
-#ifdef BCM_VLAN
-/* Called with rtnl_lock */
-static void
-bnx2_vlan_rx_register(struct net_device *dev, struct vlan_group *vlgrp)
-{
- struct bnx2 *bp = netdev_priv(dev);
-
- if (netif_running(dev))
- bnx2_netif_stop(bp, false);
-
- bp->vlgrp = vlgrp;
-
- if (!netif_running(dev))
- return;
-
- bnx2_set_rx_mode(dev);
- if (bp->flags & BNX2_FLAG_CAN_KEEP_VLAN)
- bnx2_fw_sync(bp, BNX2_DRV_MSG_CODE_KEEP_VLAN_UPDATE, 0, 1);
-
- bnx2_netif_start(bp, false);
-}
-#endif
-
/* Called with netif_tx_lock.
* bnx2_tx_int() runs without netif_tx_lock unless it needs to call
* netif_wake_queue().
@@ -6428,12 +6374,11 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
vlan_tag_flags |= TX_BD_FLAGS_TCP_UDP_CKSUM;
}
-#ifdef BCM_VLAN
if (vlan_tx_tag_present(skb)) {
vlan_tag_flags |=
(TX_BD_FLAGS_VLAN_TAG | (vlan_tx_tag_get(skb) << 16));
}
-#endif
+
if ((mss = skb_shinfo(skb)->gso_size)) {
u32 tcp_opt_len;
struct iphdr *iph;
@@ -7578,7 +7523,28 @@ bnx2_set_tx_csum(struct net_device *dev, u32 data)
static int
bnx2_set_flags(struct net_device *dev, u32 data)
{
- return ethtool_op_set_flags(dev, data, ETH_FLAG_RXHASH);
+ struct bnx2 *bp = netdev_priv(dev);
+ int rc;
+
+ if (!(bp->flags & BNX2_FLAG_CAN_KEEP_VLAN) &&
+ !(data & ETH_FLAG_RXVLAN))
+ return -EOPNOTSUPP;
+
+ rc = ethtool_op_set_flags(dev, data, ETH_FLAG_RXHASH | ETH_FLAG_RXVLAN |
+ ETH_FLAG_TXVLAN);
+ if (rc)
+ return rc;
+
+ if ((!!(data & ETH_FLAG_RXVLAN) !=
+ !!(bp->rx_mode & BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG)) &&
+ netif_running(dev)) {
+ bnx2_netif_stop(bp, false);
+ bnx2_set_rx_mode(dev);
+ bnx2_fw_sync(bp, BNX2_DRV_MSG_CODE_KEEP_VLAN_UPDATE, 0, 1);
+ bnx2_netif_start(bp, false);
+ }
+
+ return 0;
}
static const struct ethtool_ops bnx2_ethtool_ops = {
@@ -8318,9 +8284,6 @@ static const struct net_device_ops bnx2_netdev_ops = {
.ndo_set_mac_address = bnx2_change_mac_addr,
.ndo_change_mtu = bnx2_change_mtu,
.ndo_tx_timeout = bnx2_tx_timeout,
-#ifdef BCM_VLAN
- .ndo_vlan_rx_register = bnx2_vlan_rx_register,
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = poll_bnx2,
#endif
@@ -8328,9 +8291,7 @@ static const struct net_device_ops bnx2_netdev_ops = {
static void inline vlan_features_add(struct net_device *dev, unsigned long flags)
{
-#ifdef BCM_VLAN
dev->vlan_features |= flags;
-#endif
}
static int __devinit
@@ -8379,9 +8340,7 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->features |= NETIF_F_IPV6_CSUM;
vlan_features_add(dev, NETIF_F_IPV6_CSUM);
}
-#ifdef BCM_VLAN
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
-#endif
dev->features |= NETIF_F_TSO | NETIF_F_TSO_ECN;
vlan_features_add(dev, NETIF_F_TSO | NETIF_F_TSO_ECN);
if (CHIP_NUM(bp) == CHIP_NUM_5709) {
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index efdfbc2..4f44db6 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6742,10 +6742,6 @@ struct bnx2 {
struct bnx2_napi bnx2_napi[BNX2_MAX_MSIX_VEC];
-#ifdef BCM_VLAN
- struct vlan_group *vlgrp;
-#endif
-
u32 rx_buf_use_size; /* useable size */
u32 rx_buf_size; /* with alignment */
u32 rx_copy_thresh;
--
1.7.1
^ permalink raw reply related
* [PATCH v2 07/14] ethtool: Add support for vlan accleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Now that vlan acceleration is handled consistently regardless of usage,
it is possible to enable and disable it at will. This adds support for
Ethtool operations that change the offloading status for debugging
purposes, similar to other forms of hardware acceleration.
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
include/linux/ethtool.h | 2 ++
net/core/ethtool.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 8a3338c..6628a50 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -309,6 +309,8 @@ struct ethtool_perm_addr {
* flag differs from the read-only value.
*/
enum ethtool_flags {
+ ETH_FLAG_TXVLAN = (1 << 7), /* TX VLAN offload enabled */
+ ETH_FLAG_RXVLAN = (1 << 8), /* RX VLAN offload enabled */
ETH_FLAG_LRO = (1 << 15), /* LRO is enabled */
ETH_FLAG_NTUPLE = (1 << 27), /* N-tuple filters enabled */
ETH_FLAG_RXHASH = (1 << 28),
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 685c700..956a9f4 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -132,7 +132,8 @@ EXPORT_SYMBOL(ethtool_op_set_ufo);
* NETIF_F_xxx values in include/linux/netdevice.h
*/
static const u32 flags_dup_features =
- (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
+ (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
+ ETH_FLAG_RXHASH);
u32 ethtool_op_get_flags(struct net_device *dev)
{
--
1.7.1
^ permalink raw reply related
* [PATCH v2 10/14] ixgbe: Update ixgbe to use new vlan accleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev, Peter Waskiewicz, Emil Tantilov, Jeff Kirsher
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Make the ixgbe driver use the new vlan accleration model.
Signed-off-by: Jesse Gross <jesse@nicira.com>
CC: Peter Waskiewicz <peter.p.waskiewicz.jr@intel.com>
CC: Emil Tantilov <emil.s.tantilov@intel.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/ixgbe/ixgbe.h | 4 +-
drivers/net/ixgbe/ixgbe_ethtool.c | 12 +++-
drivers/net/ixgbe/ixgbe_main.c | 137 ++++++++++++++++---------------------
3 files changed, 74 insertions(+), 79 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index a8c47b0..5e38de7 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -28,11 +28,13 @@
#ifndef _IXGBE_H_
#define _IXGBE_H_
+#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/cpumask.h>
#include <linux/aer.h>
+#include <linux/if_vlan.h>
#include "ixgbe_type.h"
#include "ixgbe_common.h"
@@ -287,7 +289,7 @@ struct ixgbe_q_vector {
/* board specific private data structure */
struct ixgbe_adapter {
struct timer_list watchdog_timer;
- struct vlan_group *vlgrp;
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
u16 bd_number;
struct work_struct reset_task;
struct ixgbe_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index d4ac943..dbfd62f 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -2113,7 +2113,17 @@ static int ixgbe_set_flags(struct net_device *netdev, u32 data)
bool need_reset = false;
int rc;
- rc = ethtool_op_set_flags(netdev, data, ETH_FLAG_LRO | ETH_FLAG_NTUPLE);
+#ifdef CONFIG_IXGBE_DCB
+ if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
+ !(data & ETH_FLAG_RXVLAN))
+ return -EINVAL;
+#endif
+
+ need_reset = (data & ETH_FLAG_RXVLAN) !=
+ (netdev->features & NETIF_F_HW_VLAN_RX);
+
+ rc = ethtool_op_set_flags(netdev, data, ETH_FLAG_LRO |
+ ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN);
if (rc)
return rc;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 998debe..56f6b80 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -954,17 +954,13 @@ static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
bool is_vlan = (status & IXGBE_RXD_STAT_VP);
u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
- if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
- if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
- vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
- else
- napi_gro_receive(napi, skb);
- } else {
- if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
- vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
- else
- netif_rx(skb);
- }
+ if (is_vlan && (tag & VLAN_VID_MASK))
+ __vlan_hwaccel_put_tag(skb, tag);
+
+ if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
+ napi_gro_receive(napi, skb);
+ else
+ netif_rx(skb);
}
/**
@@ -3065,6 +3061,7 @@ static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
/* add VID to filter table */
hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
+ set_bit(vid, adapter->active_vlans);
}
static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
@@ -3073,16 +3070,9 @@ static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
struct ixgbe_hw *hw = &adapter->hw;
int pool_ndx = adapter->num_vfs;
- if (!test_bit(__IXGBE_DOWN, &adapter->state))
- ixgbe_irq_disable(adapter);
-
- vlan_group_set_device(adapter->vlgrp, vid, NULL);
-
- if (!test_bit(__IXGBE_DOWN, &adapter->state))
- ixgbe_irq_enable(adapter, true, true);
-
/* remove VID from filter table */
hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
+ clear_bit(vid, adapter->active_vlans);
}
/**
@@ -3092,27 +3082,45 @@ static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
- u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ u32 vlnctrl;
+
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+}
+
+/**
+ * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
+
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl |= IXGBE_VLNCTRL_VFE;
+ vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+}
+
+/**
+ * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
int i, j;
switch (hw->mac.type) {
case ixgbe_mac_82598EB:
- vlnctrl &= ~IXGBE_VLNCTRL_VFE;
-#ifdef CONFIG_IXGBE_DCB
- if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
- vlnctrl &= ~IXGBE_VLNCTRL_VME;
-#endif
- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl &= ~IXGBE_VLNCTRL_VME;
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
break;
case ixgbe_mac_82599EB:
- vlnctrl &= ~IXGBE_VLNCTRL_VFE;
- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
- IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
-#ifdef CONFIG_IXGBE_DCB
- if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
- break;
-#endif
for (i = 0; i < adapter->num_rx_queues; i++) {
j = adapter->rx_ring[i]->reg_idx;
vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
@@ -3126,25 +3134,22 @@ static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
}
/**
- * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
+ * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
* @adapter: driver data
*/
-static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
+static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
- u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ u32 vlnctrl;
int i, j;
switch (hw->mac.type) {
case ixgbe_mac_82598EB:
- vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl |= IXGBE_VLNCTRL_VME;
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
break;
case ixgbe_mac_82599EB:
- vlnctrl |= IXGBE_VLNCTRL_VFE;
- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
- IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
for (i = 0; i < adapter->num_rx_queues; i++) {
j = adapter->rx_ring[i]->reg_idx;
vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
@@ -3157,40 +3162,14 @@ static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
}
}
-static void ixgbe_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *grp)
-{
- struct ixgbe_adapter *adapter = netdev_priv(netdev);
-
- if (!test_bit(__IXGBE_DOWN, &adapter->state))
- ixgbe_irq_disable(adapter);
- adapter->vlgrp = grp;
-
- /*
- * For a DCB driver, always enable VLAN tag stripping so we can
- * still receive traffic from a DCB-enabled host even if we're
- * not in DCB mode.
- */
- ixgbe_vlan_filter_enable(adapter);
-
- ixgbe_vlan_rx_add_vid(netdev, 0);
-
- if (!test_bit(__IXGBE_DOWN, &adapter->state))
- ixgbe_irq_enable(adapter, true, true);
-}
-
static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
{
- ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
+ u16 vid;
- if (adapter->vlgrp) {
- u16 vid;
- for (vid = 0; vid < VLAN_N_VID; vid++) {
- if (!vlan_group_get_device(adapter->vlgrp, vid))
- continue;
- ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
- }
- }
+ ixgbe_vlan_rx_add_vid(adapter->netdev, 0);
+
+ for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+ ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
}
/**
@@ -3305,6 +3284,11 @@ void ixgbe_set_rx_mode(struct net_device *netdev)
}
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
+
+ if (netdev->features & NETIF_F_HW_VLAN_RX)
+ ixgbe_vlan_strip_enable(adapter);
+ else
+ ixgbe_vlan_strip_disable(adapter);
}
static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
@@ -3388,7 +3372,7 @@ static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
}
/* Enable VLAN tag insert/strip */
- ixgbe_vlan_filter_enable(adapter);
+ adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
}
@@ -3400,13 +3384,13 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
int i;
- ixgbe_set_rx_mode(netdev);
-
- ixgbe_restore_vlan(adapter);
#ifdef CONFIG_IXGBE_DCB
ixgbe_configure_dcb(adapter);
#endif
+ ixgbe_set_rx_mode(netdev);
+ ixgbe_restore_vlan(adapter);
+
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
ixgbe_configure_fcoe(adapter);
@@ -6569,7 +6553,6 @@ static const struct net_device_ops ixgbe_netdev_ops = {
.ndo_set_mac_address = ixgbe_set_mac,
.ndo_change_mtu = ixgbe_change_mtu,
.ndo_tx_timeout = ixgbe_tx_timeout,
- .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
.ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
.ndo_do_ioctl = ixgbe_ioctl,
--
1.7.1
^ permalink raw reply related
* [PATCH v2 11/14] bnx2x: Update bnx2x to use new vlan accleration.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev, Hao Zheng, Eilon Greenstein
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
From: Hao Zheng <hzheng@nicira.com>
Make the bnx2x driver use the new vlan accleration model.
Signed-off-by: Hao Zheng <hzheng@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
CC: Eilon Greenstein <eilong@broadcom.com>
---
drivers/net/bnx2x/bnx2x.h | 10 ------
drivers/net/bnx2x/bnx2x_cmn.c | 60 +++++++------------------------------
drivers/net/bnx2x/bnx2x_ethtool.c | 33 ++++++++++----------
drivers/net/bnx2x/bnx2x_main.c | 8 -----
4 files changed, 27 insertions(+), 84 deletions(-)
diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h
index 3bf236b..9571ecf 100644
--- a/drivers/net/bnx2x/bnx2x.h
+++ b/drivers/net/bnx2x/bnx2x.h
@@ -24,10 +24,6 @@
#define DRV_MODULE_RELDATE "2010/10/19"
#define BNX2X_BC_VER 0x040200
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-#define BCM_VLAN 1
-#endif
-
#define BNX2X_MULTI_QUEUE
#define BNX2X_NEW_NAPI
@@ -858,10 +854,6 @@ struct bnx2x {
int tx_ring_size;
-#ifdef BCM_VLAN
- struct vlan_group *vlgrp;
-#endif
-
u32 rx_csum;
u32 rx_buf_size;
/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
@@ -925,8 +917,6 @@ struct bnx2x {
#define NO_MCP_FLAG 0x100
#define DISABLE_MSI_FLAG 0x200
#define BP_NOMCP(bp) (bp->flags & NO_MCP_FLAG)
-#define HW_VLAN_TX_FLAG 0x400
-#define HW_VLAN_RX_FLAG 0x800
#define MF_FUNC_DIS 0x1000
int pf_num; /* absolute PF number */
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index 6905b2e..bc58375 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -16,16 +16,13 @@
*/
#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <net/ipv6.h>
#include <net/ip6_checksum.h>
#include <linux/firmware.h>
#include "bnx2x_cmn.h"
-#ifdef BCM_VLAN
-#include <linux/if_vlan.h>
-#endif
-
#include "bnx2x_init.h"
@@ -346,13 +343,6 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
if (likely(new_skb)) {
/* fix ip xsum and give it to the stack */
/* (no need to map the new skb) */
-#ifdef BCM_VLAN
- int is_vlan_cqe =
- (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
- PARSING_FLAGS_VLAN);
- int is_not_hwaccel_vlan_cqe =
- (is_vlan_cqe && (!(bp->flags & HW_VLAN_RX_FLAG)));
-#endif
prefetch(skb);
prefetch(((char *)(skb)) + L1_CACHE_BYTES);
@@ -377,28 +367,18 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
struct iphdr *iph;
iph = (struct iphdr *)skb->data;
-#ifdef BCM_VLAN
- /* If there is no Rx VLAN offloading -
- take VLAN tag into an account */
- if (unlikely(is_not_hwaccel_vlan_cqe))
- iph = (struct iphdr *)((u8 *)iph + VLAN_HLEN);
-#endif
iph->check = 0;
iph->check = ip_fast_csum((u8 *)iph, iph->ihl);
}
if (!bnx2x_fill_frag_skb(bp, fp, skb,
&cqe->fast_path_cqe, cqe_idx)) {
-#ifdef BCM_VLAN
- if ((bp->vlgrp != NULL) &&
- (le16_to_cpu(cqe->fast_path_cqe.
- pars_flags.flags) & PARSING_FLAGS_VLAN))
- vlan_gro_receive(&fp->napi, bp->vlgrp,
+ if ((le16_to_cpu(cqe->fast_path_cqe.
+ pars_flags.flags) & PARSING_FLAGS_VLAN))
+ __vlan_hwaccel_put_tag(skb,
le16_to_cpu(cqe->fast_path_cqe.
- vlan_tag), skb);
- else
-#endif
- napi_gro_receive(&fp->napi, skb);
+ vlan_tag));
+ napi_gro_receive(&fp->napi, skb);
} else {
DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages"
" - dropping packet!\n");
@@ -633,15 +613,11 @@ reuse_rx:
skb_record_rx_queue(skb, fp->index);
-#ifdef BCM_VLAN
- if ((bp->vlgrp != NULL) && (bp->flags & HW_VLAN_RX_FLAG) &&
- (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
- PARSING_FLAGS_VLAN))
- vlan_gro_receive(&fp->napi, bp->vlgrp,
- le16_to_cpu(cqe->fast_path_cqe.vlan_tag), skb);
- else
-#endif
- napi_gro_receive(&fp->napi, skb);
+ if (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
+ PARSING_FLAGS_VLAN)
+ __vlan_hwaccel_put_tag(skb,
+ le16_to_cpu(cqe->fast_path_cqe.vlan_tag));
+ napi_gro_receive(&fp->napi, skb);
next_rx:
@@ -2025,14 +2001,12 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
"sending pkt %u @%p next_idx %u bd %u @%p\n",
pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd);
-#ifdef BCM_VLAN
if (vlan_tx_tag_present(skb)) {
tx_start_bd->vlan_or_ethertype =
cpu_to_le16(vlan_tx_tag_get(skb));
tx_start_bd->bd_flags.as_bitfield |=
(X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
} else
-#endif
tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
/* turn on parsing and get a BD */
@@ -2317,18 +2291,6 @@ void bnx2x_tx_timeout(struct net_device *dev)
schedule_delayed_work(&bp->reset_task, 0);
}
-#ifdef BCM_VLAN
-/* called with rtnl_lock */
-void bnx2x_vlan_rx_register(struct net_device *dev,
- struct vlan_group *vlgrp)
-{
- struct bnx2x *bp = netdev_priv(dev);
-
- bp->vlgrp = vlgrp;
-}
-
-#endif
-
int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *dev = pci_get_drvdata(pdev);
diff --git a/drivers/net/bnx2x/bnx2x_ethtool.c b/drivers/net/bnx2x/bnx2x_ethtool.c
index 54fe061..daefef6 100644
--- a/drivers/net/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/bnx2x/bnx2x_ethtool.c
@@ -1117,35 +1117,34 @@ static int bnx2x_set_flags(struct net_device *dev, u32 data)
int changed = 0;
int rc = 0;
- if (data & ~(ETH_FLAG_LRO | ETH_FLAG_RXHASH))
- return -EINVAL;
-
if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
printk(KERN_ERR "Handling parity error recovery. Try again later\n");
return -EAGAIN;
}
+ if (!(data & ETH_FLAG_RXVLAN))
+ return -EOPNOTSUPP;
+
+ if ((data & ETH_FLAG_LRO) && bp->rx_csum && bp->disable_tpa)
+ return -EINVAL;
+
+ rc = ethtool_op_set_flags(dev, data, ETH_FLAG_LRO | ETH_FLAG_RXVLAN |
+ ETH_FLAG_TXVLAN | ETH_FLAG_RXHASH);
+ if (rc)
+ return rc;
+
/* TPA requires Rx CSUM offloading */
if ((data & ETH_FLAG_LRO) && bp->rx_csum) {
- if (!bp->disable_tpa) {
- if (!(dev->features & NETIF_F_LRO)) {
- dev->features |= NETIF_F_LRO;
- bp->flags |= TPA_ENABLE_FLAG;
- changed = 1;
- }
- } else
- rc = -EINVAL;
- } else if (dev->features & NETIF_F_LRO) {
+ if (!(bp->flags & TPA_ENABLE_FLAG)) {
+ bp->flags |= TPA_ENABLE_FLAG;
+ changed = 1;
+ }
+ } else if (bp->flags & TPA_ENABLE_FLAG) {
dev->features &= ~NETIF_F_LRO;
bp->flags &= ~TPA_ENABLE_FLAG;
changed = 1;
}
- if (data & ETH_FLAG_RXHASH)
- dev->features |= NETIF_F_RXHASH;
- else
- dev->features &= ~NETIF_F_RXHASH;
-
if (changed && netif_running(dev)) {
bnx2x_nic_unload(bp, UNLOAD_NORMAL);
rc = bnx2x_nic_load(bp, LOAD_NORMAL);
diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index f22e283..ff99a2f 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -2371,10 +2371,8 @@ static inline u16 bnx2x_get_cl_flags(struct bnx2x *bp,
flags |= QUEUE_FLG_HC;
flags |= IS_MF(bp) ? QUEUE_FLG_OV : 0;
-#ifdef BCM_VLAN
flags |= QUEUE_FLG_VLAN;
DP(NETIF_MSG_IFUP, "vlan removal enabled\n");
-#endif
if (!fp->disable_tpa)
flags |= QUEUE_FLG_TPA;
@@ -8630,9 +8628,6 @@ static const struct net_device_ops bnx2x_netdev_ops = {
.ndo_do_ioctl = bnx2x_ioctl,
.ndo_change_mtu = bnx2x_change_mtu,
.ndo_tx_timeout = bnx2x_tx_timeout,
-#ifdef BCM_VLAN
- .ndo_vlan_rx_register = bnx2x_vlan_rx_register,
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = poll_bnx2x,
#endif
@@ -8764,9 +8759,7 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
dev->features |= NETIF_F_HIGHDMA;
dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
dev->features |= NETIF_F_TSO6;
-#ifdef BCM_VLAN
dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
- bp->flags |= (HW_VLAN_RX_FLAG | HW_VLAN_TX_FLAG);
dev->vlan_features |= NETIF_F_SG;
dev->vlan_features |= NETIF_F_HW_CSUM;
@@ -8774,7 +8767,6 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
dev->vlan_features |= NETIF_F_HIGHDMA;
dev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
dev->vlan_features |= NETIF_F_TSO6;
-#endif
/* get_port_hwinfo() will set prtad and mmds properly */
bp->mdio.prtad = MDIO_PRTAD_NONE;
--
1.7.1
^ permalink raw reply related
* [PATCH v2 12/14] lro: Remove explicit vlan support.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
Using the new vlan accleration model, LRO no longer needs to be
explicitly passed the vlan information because it is contained in
the skb. Since all LRO did was pass the vlan through, this removes
that knowledge.
Signed-off-by: Jesse Gross <jesse@nicira.com>
--
This patch can only be applied once all drivers that use LRO and vlan acceleration
have been converted over to the new model.
---
include/linux/inet_lro.h | 20 ------------
net/ipv4/inet_lro.c | 74 +++++++---------------------------------------
2 files changed, 11 insertions(+), 83 deletions(-)
diff --git a/include/linux/inet_lro.h b/include/linux/inet_lro.h
index c4335fa..667281a 100644
--- a/include/linux/inet_lro.h
+++ b/include/linux/inet_lro.h
@@ -50,7 +50,6 @@ struct net_lro_desc {
struct skb_frag_struct *next_frag;
struct iphdr *iph;
struct tcphdr *tcph;
- struct vlan_group *vgrp;
__wsum data_csum;
__be32 tcp_rcv_tsecr;
__be32 tcp_rcv_tsval;
@@ -60,9 +59,7 @@ struct net_lro_desc {
u16 ip_tot_len;
u16 tcp_saw_tstamp; /* timestamps enabled */
__be16 tcp_window;
- u16 vlan_tag;
int pkt_aggr_cnt; /* counts aggregated packets */
- int vlan_packet;
int mss;
int active;
};
@@ -137,16 +134,6 @@ void lro_receive_skb(struct net_lro_mgr *lro_mgr,
void *priv);
/*
- * Processes a SKB with VLAN HW acceleration support
- */
-
-void lro_vlan_hwaccel_receive_skb(struct net_lro_mgr *lro_mgr,
- struct sk_buff *skb,
- struct vlan_group *vgrp,
- u16 vlan_tag,
- void *priv);
-
-/*
* Processes a fragment list
*
* This functions aggregate fragments and generate SKBs do pass
@@ -165,13 +152,6 @@ void lro_receive_frags(struct net_lro_mgr *lro_mgr,
struct skb_frag_struct *frags,
int len, int true_size, void *priv, __wsum sum);
-void lro_vlan_hwaccel_receive_frags(struct net_lro_mgr *lro_mgr,
- struct skb_frag_struct *frags,
- int len, int true_size,
- struct vlan_group *vgrp,
- u16 vlan_tag,
- void *priv, __wsum sum);
-
/*
* Forward all aggregated SKBs held by lro_mgr to network stack
*/
diff --git a/net/ipv4/inet_lro.c b/net/ipv4/inet_lro.c
index 47038cb..8945a1d 100644
--- a/net/ipv4/inet_lro.c
+++ b/net/ipv4/inet_lro.c
@@ -146,8 +146,7 @@ static __wsum lro_tcp_data_csum(struct iphdr *iph, struct tcphdr *tcph, int len)
}
static void lro_init_desc(struct net_lro_desc *lro_desc, struct sk_buff *skb,
- struct iphdr *iph, struct tcphdr *tcph,
- u16 vlan_tag, struct vlan_group *vgrp)
+ struct iphdr *iph, struct tcphdr *tcph)
{
int nr_frags;
__be32 *ptr;
@@ -173,8 +172,6 @@ static void lro_init_desc(struct net_lro_desc *lro_desc, struct sk_buff *skb,
}
lro_desc->mss = tcp_data_len;
- lro_desc->vgrp = vgrp;
- lro_desc->vlan_tag = vlan_tag;
lro_desc->active = 1;
lro_desc->data_csum = lro_tcp_data_csum(iph, tcph,
@@ -309,29 +306,17 @@ static void lro_flush(struct net_lro_mgr *lro_mgr,
skb_shinfo(lro_desc->parent)->gso_size = lro_desc->mss;
- if (lro_desc->vgrp) {
- if (lro_mgr->features & LRO_F_NAPI)
- vlan_hwaccel_receive_skb(lro_desc->parent,
- lro_desc->vgrp,
- lro_desc->vlan_tag);
- else
- vlan_hwaccel_rx(lro_desc->parent,
- lro_desc->vgrp,
- lro_desc->vlan_tag);
-
- } else {
- if (lro_mgr->features & LRO_F_NAPI)
- netif_receive_skb(lro_desc->parent);
- else
- netif_rx(lro_desc->parent);
- }
+ if (lro_mgr->features & LRO_F_NAPI)
+ netif_receive_skb(lro_desc->parent);
+ else
+ netif_rx(lro_desc->parent);
LRO_INC_STATS(lro_mgr, flushed);
lro_clear_desc(lro_desc);
}
static int __lro_proc_skb(struct net_lro_mgr *lro_mgr, struct sk_buff *skb,
- struct vlan_group *vgrp, u16 vlan_tag, void *priv)
+ void *priv)
{
struct net_lro_desc *lro_desc;
struct iphdr *iph;
@@ -360,7 +345,7 @@ static int __lro_proc_skb(struct net_lro_mgr *lro_mgr, struct sk_buff *skb,
goto out;
skb->ip_summed = lro_mgr->ip_summed_aggr;
- lro_init_desc(lro_desc, skb, iph, tcph, vlan_tag, vgrp);
+ lro_init_desc(lro_desc, skb, iph, tcph);
LRO_INC_STATS(lro_mgr, aggregated);
return 0;
}
@@ -433,8 +418,7 @@ static struct sk_buff *lro_gen_skb(struct net_lro_mgr *lro_mgr,
static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
struct skb_frag_struct *frags,
int len, int true_size,
- struct vlan_group *vgrp,
- u16 vlan_tag, void *priv, __wsum sum)
+ void *priv, __wsum sum)
{
struct net_lro_desc *lro_desc;
struct iphdr *iph;
@@ -480,7 +464,7 @@ static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
tcph = (void *)((u8 *)skb->data + vlan_hdr_len
+ IP_HDR_LEN(iph));
- lro_init_desc(lro_desc, skb, iph, tcph, 0, NULL);
+ lro_init_desc(lro_desc, skb, iph, tcph);
LRO_INC_STATS(lro_mgr, aggregated);
return NULL;
}
@@ -514,7 +498,7 @@ void lro_receive_skb(struct net_lro_mgr *lro_mgr,
struct sk_buff *skb,
void *priv)
{
- if (__lro_proc_skb(lro_mgr, skb, NULL, 0, priv)) {
+ if (__lro_proc_skb(lro_mgr, skb, priv)) {
if (lro_mgr->features & LRO_F_NAPI)
netif_receive_skb(skb);
else
@@ -523,29 +507,13 @@ void lro_receive_skb(struct net_lro_mgr *lro_mgr,
}
EXPORT_SYMBOL(lro_receive_skb);
-void lro_vlan_hwaccel_receive_skb(struct net_lro_mgr *lro_mgr,
- struct sk_buff *skb,
- struct vlan_group *vgrp,
- u16 vlan_tag,
- void *priv)
-{
- if (__lro_proc_skb(lro_mgr, skb, vgrp, vlan_tag, priv)) {
- if (lro_mgr->features & LRO_F_NAPI)
- vlan_hwaccel_receive_skb(skb, vgrp, vlan_tag);
- else
- vlan_hwaccel_rx(skb, vgrp, vlan_tag);
- }
-}
-EXPORT_SYMBOL(lro_vlan_hwaccel_receive_skb);
-
void lro_receive_frags(struct net_lro_mgr *lro_mgr,
struct skb_frag_struct *frags,
int len, int true_size, void *priv, __wsum sum)
{
struct sk_buff *skb;
- skb = __lro_proc_segment(lro_mgr, frags, len, true_size, NULL, 0,
- priv, sum);
+ skb = __lro_proc_segment(lro_mgr, frags, len, true_size, priv, sum);
if (!skb)
return;
@@ -556,26 +524,6 @@ void lro_receive_frags(struct net_lro_mgr *lro_mgr,
}
EXPORT_SYMBOL(lro_receive_frags);
-void lro_vlan_hwaccel_receive_frags(struct net_lro_mgr *lro_mgr,
- struct skb_frag_struct *frags,
- int len, int true_size,
- struct vlan_group *vgrp,
- u16 vlan_tag, void *priv, __wsum sum)
-{
- struct sk_buff *skb;
-
- skb = __lro_proc_segment(lro_mgr, frags, len, true_size, vgrp,
- vlan_tag, priv, sum);
- if (!skb)
- return;
-
- if (lro_mgr->features & LRO_F_NAPI)
- vlan_hwaccel_receive_skb(skb, vgrp, vlan_tag);
- else
- vlan_hwaccel_rx(skb, vgrp, vlan_tag);
-}
-EXPORT_SYMBOL(lro_vlan_hwaccel_receive_frags);
-
void lro_flush_all(struct net_lro_mgr *lro_mgr)
{
int i;
--
1.7.1
^ permalink raw reply related
* [PATCH v2 13/14] bonding: Update bonding for new vlan model.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
It is no longer necessary to register vlan groups, so update bonding
to not do that on its slaves. Although the new vlan accleration
model allows additional flexibility, bonding continues to require vlan
devices since it needs addtional system state to handle ARP/IGMP. This
also removes fallback code for non-vlan acclerated slaves since core
networking now handles that.
Signed-off-by: Jesse Gross <jesse@nicira.com>
--
This patch can only be applied once all drivers that use vlan acceleration
have been converted over to the new model.
---
drivers/net/bonding/bond_alb.c | 8 +--
drivers/net/bonding/bond_ipv6.c | 5 +-
drivers/net/bonding/bond_main.c | 143 ++++++++-------------------------------
drivers/net/bonding/bonding.h | 1 -
4 files changed, 32 insertions(+), 125 deletions(-)
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 26bb118..c911456 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -685,10 +685,8 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
client_info->ntt = 0;
}
- if (bond->vlgrp) {
- if (!vlan_get_tag(skb, &client_info->vlan_id))
- client_info->tag = 1;
- }
+ if (!vlan_get_tag(skb, &client_info->vlan_id))
+ client_info->tag = 1;
if (!client_info->assigned) {
u32 prev_tbl_head = bond_info->rx_hashtbl_head;
@@ -907,7 +905,7 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
skb->priority = TC_PRIO_CONTROL;
skb->dev = slave->dev;
- if (bond->vlgrp) {
+ if (!list_empty(&bond->vlan_list)) {
struct vlan_entry *vlan;
vlan = bond_next_vlan(bond,
diff --git a/drivers/net/bonding/bond_ipv6.c b/drivers/net/bonding/bond_ipv6.c
index 121b073..c276b5a 100644
--- a/drivers/net/bonding/bond_ipv6.c
+++ b/drivers/net/bonding/bond_ipv6.c
@@ -178,10 +178,7 @@ static int bond_inet6addr_event(struct notifier_block *this,
}
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- if (!bond->vlgrp)
- continue;
- vlan_dev = vlan_group_get_device(bond->vlgrp,
- vlan->vlan_id);
+ vlan_dev = vlan_find_dev(bond->dev, vlan->vlan_id);
if (vlan_dev == event_dev) {
switch (event) {
case NETDEV_UP:
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 6b9a7bd..1b89b61 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -418,36 +418,11 @@ struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr)
* @bond: bond device that got this skb for tx.
* @skb: hw accel VLAN tagged skb to transmit
* @slave_dev: slave that is supposed to xmit this skbuff
- *
- * When the bond gets an skb to transmit that is
- * already hardware accelerated VLAN tagged, and it
- * needs to relay this skb to a slave that is not
- * hw accel capable, the skb needs to be "unaccelerated",
- * i.e. strip the hwaccel tag and re-insert it as part
- * of the payload.
*/
int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
struct net_device *slave_dev)
{
- unsigned short uninitialized_var(vlan_id);
-
- /* Test vlan_list not vlgrp to catch and handle 802.1p tags */
- if (!list_empty(&bond->vlan_list) &&
- !(slave_dev->features & NETIF_F_HW_VLAN_TX) &&
- vlan_get_tag(skb, &vlan_id) == 0) {
- skb->dev = slave_dev;
- skb = vlan_put_tag(skb, vlan_id);
- if (!skb) {
- /* vlan_put_tag() frees the skb in case of error,
- * so return success here so the calling functions
- * won't attempt to free is again.
- */
- return 0;
- }
- } else {
- skb->dev = slave_dev;
- }
-
+ skb->dev = slave_dev;
skb->priority = 1;
#ifdef CONFIG_NET_POLL_CONTROLLER
if (unlikely(bond->dev->priv_flags & IFF_IN_NETPOLL)) {
@@ -464,8 +439,8 @@ int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
}
/*
- * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid
- * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a
+ * In the following 2 functions, bond_vlan_rx_add_vid and
+ * bond_vlan_rx_kill_vid, we don't protect the slave list iteration with a
* lock because:
* a. This operation is performed in IOCTL context,
* b. The operation is protected by the RTNL semaphore in the 8021q code,
@@ -482,33 +457,6 @@ int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
*/
/**
- * bond_vlan_rx_register - Propagates registration to slaves
- * @bond_dev: bonding net device that got called
- * @grp: vlan group being registered
- */
-static void bond_vlan_rx_register(struct net_device *bond_dev,
- struct vlan_group *grp)
-{
- struct bonding *bond = netdev_priv(bond_dev);
- struct slave *slave;
- int i;
-
- write_lock(&bond->lock);
- bond->vlgrp = grp;
- write_unlock(&bond->lock);
-
- bond_for_each_slave(bond, slave, i) {
- struct net_device *slave_dev = slave->dev;
- const struct net_device_ops *slave_ops = slave_dev->netdev_ops;
-
- if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
- slave_ops->ndo_vlan_rx_register) {
- slave_ops->ndo_vlan_rx_register(slave_dev, grp);
- }
- }
-}
-
-/**
* bond_vlan_rx_add_vid - Propagates adding an id to slaves
* @bond_dev: bonding net device that got called
* @vid: vlan id being added
@@ -545,7 +493,6 @@ static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid)
{
struct bonding *bond = netdev_priv(bond_dev);
struct slave *slave;
- struct net_device *vlan_dev;
int i, res;
bond_for_each_slave(bond, slave, i) {
@@ -553,14 +500,8 @@ static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid)
const struct net_device_ops *slave_ops = slave_dev->netdev_ops;
if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) &&
- slave_ops->ndo_vlan_rx_kill_vid) {
- /* Save and then restore vlan_dev in the grp array,
- * since the slave's driver might clear it.
- */
- vlan_dev = vlan_group_get_device(bond->vlgrp, vid);
+ slave_ops->ndo_vlan_rx_kill_vid)
slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid);
- vlan_group_set_device(bond->vlgrp, vid, vlan_dev);
- }
}
res = bond_del_vlan(bond, vid);
@@ -575,13 +516,6 @@ static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *sla
struct vlan_entry *vlan;
const struct net_device_ops *slave_ops = slave_dev->netdev_ops;
- if (!bond->vlgrp)
- return;
-
- if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
- slave_ops->ndo_vlan_rx_register)
- slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp);
-
if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) ||
!(slave_ops->ndo_vlan_rx_add_vid))
return;
@@ -595,30 +529,17 @@ static void bond_del_vlans_from_slave(struct bonding *bond,
{
const struct net_device_ops *slave_ops = slave_dev->netdev_ops;
struct vlan_entry *vlan;
- struct net_device *vlan_dev;
-
- if (!bond->vlgrp)
- return;
if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) ||
!(slave_ops->ndo_vlan_rx_kill_vid))
- goto unreg;
+ return;
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
if (!vlan->vlan_id)
continue;
- /* Save and then restore vlan_dev in the grp array,
- * since the slave's driver might clear it.
- */
- vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
+
slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id);
- vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev);
}
-
-unreg:
- if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
- slave_ops->ndo_vlan_rx_register)
- slave_ops->ndo_vlan_rx_register(slave_dev, NULL);
}
/*------------------------------- Link status -------------------------------*/
@@ -896,23 +817,22 @@ static void bond_resend_igmp_join_requests(struct bonding *bond)
struct vlan_entry *vlan;
read_lock(&bond->lock);
+ rcu_read_lock();
/* rejoin all groups on bond device */
__bond_resend_igmp_join_requests(bond->dev);
/* rejoin all groups on vlan devices */
- if (bond->vlgrp) {
- list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- vlan_dev = vlan_group_get_device(bond->vlgrp,
- vlan->vlan_id);
- if (vlan_dev)
- __bond_resend_igmp_join_requests(vlan_dev);
- }
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
+ vlan_dev = vlan_find_dev(bond->dev, vlan->vlan_id);
+ if (vlan_dev)
+ __bond_resend_igmp_join_requests(vlan_dev);
}
if (--bond->igmp_retrans > 0)
queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5);
+ rcu_read_unlock();
read_unlock(&bond->lock);
}
@@ -1386,8 +1306,7 @@ static int bond_sethwaddr(struct net_device *bond_dev,
}
#define BOND_VLAN_FEATURES \
- (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \
- NETIF_F_HW_VLAN_FILTER)
+ (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER)
/*
* Compute the common dev->feature set available to all slaves. Some
@@ -1483,7 +1402,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
/* no need to lock since we're protected by rtnl_lock */
if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) {
pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name);
- if (bond->vlgrp) {
+ if (!list_empty(&bond->vlan_list)) {
pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n",
bond_dev->name, slave_dev->name, bond_dev->name);
return -EPERM;
@@ -1976,9 +1895,7 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
*/
memset(bond_dev->dev_addr, 0, bond_dev->addr_len);
- if (!bond->vlgrp) {
- bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
- } else {
+ if (!list_empty(&bond->vlan_list)) {
pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n",
bond_dev->name, bond_dev->name);
pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n",
@@ -2167,9 +2084,7 @@ static int bond_release_all(struct net_device *bond_dev)
*/
memset(bond_dev->dev_addr, 0, bond_dev->addr_len);
- if (!bond->vlgrp) {
- bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
- } else {
+ if (!list_empty(&bond->vlan_list)) {
pr_warning("%s: Warning: clearing HW address of %s while it still has VLANs.\n",
bond_dev->name, bond_dev->name);
pr_warning("%s: When re-adding slaves, make sure the bond's HW address matches its VLANs'.\n",
@@ -2604,11 +2519,13 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
struct flowi fl;
struct rtable *rt;
+ rcu_read_lock();
+
for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
if (!targets[i])
break;
pr_debug("basa: target %x\n", targets[i]);
- if (!bond->vlgrp) {
+ if (list_empty(&bond->vlan_list)) {
pr_debug("basa: empty vlan: arp_send\n");
bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i],
bond->master_ip, 0);
@@ -2646,7 +2563,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
vlan_id = 0;
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
+ vlan_dev = vlan_find_dev(bond->dev, vlan->vlan_id);
if (vlan_dev == rt->dst.dev) {
vlan_id = vlan->vlan_id;
pr_debug("basa: vlan match on %s %d\n",
@@ -2669,6 +2586,8 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
}
ip_rt_put(rt);
}
+
+ rcu_read_unlock();
}
/*
@@ -2697,16 +2616,17 @@ static void bond_send_gratuitous_arp(struct bonding *bond)
bond->master_ip, 0);
}
- if (!bond->vlgrp)
- return;
+ rcu_read_lock();
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
+ vlan_dev = vlan_find_dev(bond->dev, vlan->vlan_id);
if (vlan->vlan_ip) {
bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip,
vlan->vlan_ip, vlan->vlan_id);
}
}
+
+ rcu_read_unlock();
}
static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip)
@@ -3660,9 +3580,7 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
}
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- if (!bond->vlgrp)
- continue;
- vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
+ vlan_dev = vlan_find_dev(bond->dev, vlan->vlan_id);
if (vlan_dev == event_dev) {
switch (event) {
case NETDEV_UP:
@@ -4670,7 +4588,6 @@ static const struct net_device_ops bond_netdev_ops = {
.ndo_change_mtu = bond_change_mtu,
.ndo_set_mac_address = bond_set_mac_address,
.ndo_neigh_setup = bond_neigh_setup,
- .ndo_vlan_rx_register = bond_vlan_rx_register,
.ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -4730,13 +4647,9 @@ static void bond_setup(struct net_device *bond_dev)
bond_dev->features |= NETIF_F_LLTX;
/* By default, we declare the bond to be fully
- * VLAN hardware accelerated capable. Special
- * care is taken in the various xmit functions
- * when there are slaves that are not hw accel
- * capable
+ * VLAN hardware accelerated capable.
*/
bond_dev->features |= (NETIF_F_HW_VLAN_TX |
- NETIF_F_HW_VLAN_RX |
NETIF_F_HW_VLAN_FILTER);
/* By default, we enable GRO on bonding devices.
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 2c12a5f..e9de73a 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -248,7 +248,6 @@ struct bonding {
struct alb_bond_info alb_info;
struct bond_params params;
struct list_head vlan_list;
- struct vlan_group *vlgrp;
struct packet_type arp_mon_pt;
struct workqueue_struct *wq;
struct delayed_work mii_work;
--
1.7.1
^ permalink raw reply related
* [PATCH v2 14/14] vlan: Remove accleration legacy functions.
From: Jesse Gross @ 2010-10-20 23:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
This removes the explicit vlan accleration functions that acted
as shims in favor of the main receive functions that can now
handle vlans.
Signed-off-by: Jesse Gross <jesse@nicira.com>
--
This patch can only be applied once all drivers that use vlan acceleration
have been converted over to the new model.
---
include/linux/if_vlan.h | 63 +++------------------------------------------
include/linux/netdevice.h | 8 -----
net/8021q/vlan.c | 7 +----
net/8021q/vlan_core.c | 25 ------------------
4 files changed, 5 insertions(+), 98 deletions(-)
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index a0d9786..e607256 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -74,6 +74,10 @@ static inline struct vlan_ethhdr *vlan_eth_hdr(const struct sk_buff *skb)
/* found in socket.c */
extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));
+#define vlan_tx_tag_present(__skb) ((__skb)->vlan_tci & VLAN_TAG_PRESENT)
+#define vlan_tx_tag_get(__skb) ((__skb)->vlan_tci & ~VLAN_TAG_PRESENT)
+
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
/* if this changes, algorithm will have to be reworked because this
* depends on completely exhausting the VLAN identifier space. Thus
* it gives constant time look-up, but in many cases it wastes memory.
@@ -111,10 +115,6 @@ static inline void vlan_group_set_device(struct vlan_group *vg,
array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
}
-#define vlan_tx_tag_present(__skb) ((__skb)->vlan_tci & VLAN_TAG_PRESENT)
-#define vlan_tx_tag_get(__skb) ((__skb)->vlan_tci & ~VLAN_TAG_PRESENT)
-
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
/* Must be invoked with rcu_read_lock or with RTNL. */
static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
u16 vlan_id)
@@ -130,15 +130,7 @@ static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);
extern u16 vlan_dev_vlan_id(const struct net_device *dev);
-extern int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
- u16 vlan_tci, int polling);
extern bool vlan_hwaccel_do_receive(struct sk_buff **skb);
-extern gro_result_t
-vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci, struct sk_buff *skb);
-extern gro_result_t
-vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci);
#else
static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
@@ -159,61 +151,14 @@ static inline u16 vlan_dev_vlan_id(const struct net_device *dev)
return 0;
}
-static inline int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
- u16 vlan_tci, int polling)
-{
- BUG();
- return NET_XMIT_SUCCESS;
-}
-
static inline bool vlan_hwaccel_do_receive(struct sk_buff **skb)
{
BUG();
return false;
}
-
-static inline gro_result_t
-vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci, struct sk_buff *skb)
-{
- return GRO_DROP;
-}
-
-static inline gro_result_t
-vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci)
-{
- return GRO_DROP;
-}
#endif
/**
- * vlan_hwaccel_rx - netif_rx wrapper for VLAN RX acceleration
- * @skb: buffer
- * @grp: vlan group
- * @vlan_tci: VLAN TCI as received from the card
- */
-static inline int vlan_hwaccel_rx(struct sk_buff *skb,
- struct vlan_group *grp,
- u16 vlan_tci)
-{
- return __vlan_hwaccel_rx(skb, grp, vlan_tci, 0);
-}
-
-/**
- * vlan_hwaccel_receive_skb - netif_receive_skb wrapper for VLAN RX acceleration
- * @skb: buffer
- * @grp: vlan group
- * @vlan_tci: VLAN TCI as received from the card
- */
-static inline int vlan_hwaccel_receive_skb(struct sk_buff *skb,
- struct vlan_group *grp,
- u16 vlan_tci)
-{
- return __vlan_hwaccel_rx(skb, grp, vlan_tci, 1);
-}
-
-/**
* __vlan_put_tag - regular VLAN tag inserting
* @skb: skbuff to tag
* @vlan_tci: VLAN TCI to insert
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ed7db7e..22c3c46 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -682,12 +682,6 @@ struct netdev_rx_queue {
* 3. Update dev->stats asynchronously and atomically, and define
* neither operation.
*
- * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
- * If device support VLAN receive accleration
- * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
- * when vlan groups for the device changes. Note: grp is NULL
- * if no vlan's groups are being used.
- *
* void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
* If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
* this function is called when a VLAN id is registered.
@@ -739,8 +733,6 @@ struct net_device_ops {
struct rtnl_link_stats64 *storage);
struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
- void (*ndo_vlan_rx_register)(struct net_device *dev,
- struct vlan_group *grp);
void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
unsigned short vid);
void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 05b867e..4e91db3 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -135,8 +135,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
vlan_gvrp_uninit_applicant(real_dev);
rcu_assign_pointer(real_dev->vlgrp, NULL);
- if (ops->ndo_vlan_rx_register)
- ops->ndo_vlan_rx_register(real_dev, NULL);
/* Free the group, after all cpu's are done. */
call_rcu(&grp->rcu, vlan_rcu_free);
@@ -207,11 +205,8 @@ int register_vlan_dev(struct net_device *dev)
vlan_group_set_device(grp, vlan_id, dev);
grp->nr_vlans++;
- if (ngrp) {
- if (ops->ndo_vlan_rx_register)
- ops->ndo_vlan_rx_register(real_dev, ngrp);
+ if (ngrp)
rcu_assign_pointer(real_dev->vlgrp, ngrp);
- }
if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
ops->ndo_vlan_rx_add_vid(real_dev, vlan_id);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 69b2f79..4d6a2b8 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -63,28 +63,3 @@ u16 vlan_dev_vlan_id(const struct net_device *dev)
return vlan_dev_info(dev)->vlan_id;
}
EXPORT_SYMBOL(vlan_dev_vlan_id);
-
-/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
-int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
- u16 vlan_tci, int polling)
-{
- __vlan_hwaccel_put_tag(skb, vlan_tci);
- return polling ? netif_receive_skb(skb) : netif_rx(skb);
-}
-EXPORT_SYMBOL(__vlan_hwaccel_rx);
-
-gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci, struct sk_buff *skb)
-{
- __vlan_hwaccel_put_tag(skb, vlan_tci);
- return napi_gro_receive(napi, skb);
-}
-EXPORT_SYMBOL(vlan_gro_receive);
-
-gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
- unsigned int vlan_tci)
-{
- __vlan_hwaccel_put_tag(napi->skb, vlan_tci);
- return napi_gro_frags(napi);
-}
-EXPORT_SYMBOL(vlan_gro_frags);
--
1.7.1
^ permalink raw reply related
* (unknown),
From: Lindley, Janalyn @ 2010-10-21 0:21 UTC (permalink / raw)
To: info
You won BMW X6 and £250,000.00GBP.Contact Barr Mark Hills for clams, Email;barrmarkhills@yahoo.com.hk
^ permalink raw reply
* Re: [PATCH v2 00/14] Move vlan acceleration into networking core.
From: David Dillow @ 2010-10-21 2:02 UTC (permalink / raw)
To: Jesse Gross; +Cc: David Miller, netdev
In-Reply-To: <1287618974-4714-1-git-send-email-jesse@nicira.com>
On Wed, 2010-10-20 at 16:56 -0700, Jesse Gross wrote:
> The first eleven patches can be applied immediately, while the last three need
> to wait until all drivers that support vlan acceleration are updated. If
> people agree that this patch set makes sense I will go ahead and switch over
> the dozen or so drivers that would need to change.
Here's a first pass at converting typhoon to the new methods. It is
compile tested, but I have to put the hardware back in a machine to do
some testing, which I may not be able to do before the weekend.
Of course, we could just change it to not offload by default if we need
to push this sooner.
Applies to net-next-2.6 with the vlan changes.
diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c
index 1cc6713..5ee0324 100644
--- a/drivers/net/typhoon.c
+++ b/drivers/net/typhoon.c
@@ -280,8 +280,6 @@ struct typhoon {
struct pci_dev * pdev;
struct net_device * dev;
struct napi_struct napi;
- spinlock_t state_lock;
- struct vlan_group * vlgrp;
struct basic_ring rxHiRing;
struct basic_ring rxBuffRing;
struct rxbuff_ent rxbuffers[RXENT_ENTRIES];
@@ -695,42 +693,39 @@ out:
return err;
}
-static void
-typhoon_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+static int
+typhoon_offload_vlan(struct net_device *dev, bool enabled)
{
struct typhoon *tp = netdev_priv(dev);
+ __le32 offload = tp->offload;
struct cmd_desc xp_cmd;
int err;
- spin_lock_bh(&tp->state_lock);
- if(!tp->vlgrp != !grp) {
- /* We've either been turned on for the first time, or we've
- * been turned off. Update the 3XP.
- */
- if(grp)
- tp->offload |= TYPHOON_OFFLOAD_VLAN;
- else
- tp->offload &= ~TYPHOON_OFFLOAD_VLAN;
-
- /* If the interface is up, the runtime is running -- and we
- * must be up for the vlan core to call us.
- *
- * Do the command outside of the spin lock, as it is slow.
- */
- INIT_COMMAND_WITH_RESPONSE(&xp_cmd,
- TYPHOON_CMD_SET_OFFLOAD_TASKS);
- xp_cmd.parm2 = tp->offload;
- xp_cmd.parm3 = tp->offload;
- spin_unlock_bh(&tp->state_lock);
- err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
- if(err < 0)
- netdev_err(tp->dev, "vlan offload error %d\n", -err);
- spin_lock_bh(&tp->state_lock);
- }
-
- /* now make the change visible */
- tp->vlgrp = grp;
- spin_unlock_bh(&tp->state_lock);
+ if (enabled)
+ offload |= TYPHOON_OFFLOAD_VLAN;
+ else
+ offload &= ~TYPHOON_OFFLOAD_VLAN;
+
+ if (offload == tp->offload)
+ return 0;
+
+ /* We've either been turned on for the first time, or we've
+ * been turned off. Save the setting, and update the 3XP if the
+ * runtime is active.
+ *
+ * Caller must hold the RTNL lock.
+ */
+ tp->offload = offload;
+ if (!netif_running(dev))
+ return 0;
+
+ INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
+ xp_cmd.parm2 = tp->offload;
+ xp_cmd.parm3 = tp->offload;
+ err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+ if(err < 0)
+ netdev_err(tp->dev, "vlan offload error %d\n", -err);
+ return err;
}
static inline void
@@ -1198,6 +1193,30 @@ typhoon_get_rx_csum(struct net_device *dev)
return 1;
}
+static int
+typhoon_set_flags(struct net_device *dev, u32 data)
+{
+ u32 orig_flags = dev->features;
+ int rc;
+
+ /* VLAN offloading is a package deal on the 3XP -- if enabled,
+ * we'll always have RX offload active, but we can choose to
+ * not use the TX offload.
+ */
+ if ((data & ETH_FLAG_TXVLAN) && !(data & ETH_FLAG_RXVLAN))
+ return -EINVAL;
+
+ rc = ethtool_op_set_flags(dev, data, ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN);
+ if (rc)
+ return rc;
+
+ data &= ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN;
+ rc = typhoon_offload_vlan(dev, data);
+ if (rc)
+ dev->features = orig_flags;
+ return rc;
+}
+
static void
typhoon_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
{
@@ -1224,6 +1243,8 @@ static const struct ethtool_ops typhoon_ethtool_ops = {
.set_sg = ethtool_op_set_sg,
.set_tso = ethtool_op_set_tso,
.get_ringparam = typhoon_get_ringparam,
+ .set_flags = typhoon_set_flags,
+ .get_flags = ethtool_op_get_flags,
};
static int
@@ -1309,9 +1330,9 @@ typhoon_init_interface(struct typhoon *tp)
tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM;
tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON;
+ tp->offload |= TYPHOON_OFFLOAD_VLAN;
spin_lock_init(&tp->command_lock);
- spin_lock_init(&tp->state_lock);
/* Force the writes to the shared memory area out before continuing. */
wmb();
@@ -1762,13 +1783,10 @@ typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile __le32 * read
} else
skb_checksum_none_assert(new_skb);
- spin_lock(&tp->state_lock);
- if(tp->vlgrp != NULL && rx->rxStatus & TYPHOON_RX_VLAN)
- vlan_hwaccel_receive_skb(new_skb, tp->vlgrp,
- ntohl(rx->vlanTag) & 0xffff);
- else
- netif_receive_skb(new_skb);
- spin_unlock(&tp->state_lock);
+ if (rx->rxStatus & TYPHOON_RX_VLAN)
+ __vlan_hwaccel_put_tag(new_skb,
+ ntohl(rx->vlanTag) & 0xffff);
+ netif_receive_skb(new_skb);
received++;
budget--;
@@ -1989,11 +2007,9 @@ typhoon_start_runtime(struct typhoon *tp)
goto error_out;
INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
- spin_lock_bh(&tp->state_lock);
xp_cmd.parm2 = tp->offload;
xp_cmd.parm3 = tp->offload;
err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
- spin_unlock_bh(&tp->state_lock);
if(err < 0)
goto error_out;
@@ -2231,13 +2247,9 @@ typhoon_suspend(struct pci_dev *pdev, pm_message_t state)
if(!netif_running(dev))
return 0;
- spin_lock_bh(&tp->state_lock);
- if(tp->vlgrp && tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) {
- spin_unlock_bh(&tp->state_lock);
- netdev_err(dev, "cannot do WAKE_MAGIC with VLANS\n");
- return -EBUSY;
- }
- spin_unlock_bh(&tp->state_lock);
+ if(tp->offload & TYPHOON_OFFLOAD_VLAN &&
+ tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
+ netdev_warn(dev, "WAKE_MAGIC does not work with VLANS\n");
netif_device_detach(dev);
@@ -2338,7 +2350,6 @@ static const struct net_device_ops typhoon_netdev_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = typhoon_set_mac_address,
.ndo_change_mtu = eth_change_mtu,
- .ndo_vlan_rx_register = typhoon_vlan_rx_register,
};
static int __devinit
^ permalink raw reply related
* Re: [PATCH 1/2] r6040: fix multicast operations
From: Ben Hutchings @ 2010-10-21 2:55 UTC (permalink / raw)
To: Florian Fainelli
Cc: netdev, Shawn Lin, Marc Leclerc, Albert Chen, David Miller
In-Reply-To: <201010202309.43812.florian@openwrt.org>
[-- Attachment #1: Type: text/plain, Size: 5893 bytes --]
On Wed, 2010-10-20 at 22:25 +0100, Florian Fainelli wrote:
> This patch fixes the following issues with the r6040 NIC operating in
> multicast:
>
> 1) When the IFF_ALLMULTI flag is set, we should write 0xffff to the NIC hash
> table registers to make it process multicast traffic
> 2) When the number of multicast address to handle is smaller than MCAST_MAX
> we should use the NIC multicast registers MID1_{L,M,H}.
> 3) The hashing of the address was not correct, due to an invalid substraction
> (15 - (crc & 0x0f)) instead of (crc & 0x0f)
> Reported-by: Marc Leclerc <marc-leclerc@signaturealpha.com>
> Tested-by: Marc Leclerc <marc-leclerc@signaturealpha.com>
> Signed-off-by: Shawn Lin <shawn@dmp.com.tw>
> Signed-off-by: Albert Chen <albert.chen@rdc.com.tw>
> Signed-off-by: Florian Fainelli <florian@openwrt.org>
> CC: stable@kernel.org
Remember you'll need to provide a different version for 2.6.27.y and
2.6.32.y.
> ---
> diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
> index 68a8419..3843363 100644
> --- a/drivers/net/r6040.c
> +++ b/drivers/net/r6040.c
> @@ -852,74 +852,90 @@ static void r6040_multicast_list(struct net_device *dev)
> struct r6040_private *lp = netdev_priv(dev);
> void __iomem *ioaddr = lp->base;
> u16 *adrp;
> - u16 reg;
> unsigned long flags;
> struct netdev_hw_addr *ha;
> int i;
>
> - /* MAC Address */
> - adrp = (u16 *)dev->dev_addr;
> - iowrite16(adrp[0], ioaddr + MID_0L);
> - iowrite16(adrp[1], ioaddr + MID_0M);
> - iowrite16(adrp[2], ioaddr + MID_0H);
> -
> - /* Promiscous Mode */
> spin_lock_irqsave(&lp->lock, flags);
>
> /* Clear AMCP & PROM bits */
> - reg = ioread16(ioaddr) & ~0x0120;
> - if (dev->flags & IFF_PROMISC) {
> - reg |= 0x0020;
> + lp->mcr0 = ioread16(ioaddr) & ~0x0120;
> +
> + /* Promiscuous Mode */
> + if (dev->flags & IFF_PROMISC)
> lp->mcr0 |= 0x0020;
> - }
> - /* Too many multicast addresses
> - * accept all traffic */
> - else if ((netdev_mc_count(dev) > MCAST_MAX) ||
> - (dev->flags & IFF_ALLMULTI))
> - reg |= 0x0020;
>
> - iowrite16(reg, ioaddr);
> - spin_unlock_irqrestore(&lp->lock, flags);
> + /* Enable multicast hash table function to
> + * receive all multicast packets.
> + */
> + else if (dev->flags & IFF_ALLMULTI) {
> + lp->mcr0 |= 0x0100;
Please give these flags names.
>
> - /* Build the hash table */
> - if (netdev_mc_count(dev) > MCAST_MAX) {
> - u16 hash_table[4];
> + for (i = 0; i < MCAST_MAX ; i++) {
> + iowrite16(0, ioaddr + MID_1L + 8 * i);
> + iowrite16(0, ioaddr + MID_1M + 8 * i);
> + iowrite16(0, ioaddr + MID_1H + 8 * i);
> + }
> +
> + iowrite16(0xffff, ioaddr + MAR0);
> + iowrite16(0xffff, ioaddr + MAR1);
> + iowrite16(0xffff, ioaddr + MAR2);
> + iowrite16(0xffff, ioaddr + MAR3);
> + }
> +
> + /* Use internal multicast address registers
> + * if the number of multicast addresses is not greater than MCAST_MAX.
> + */
> + else if (netdev_mc_empty(dev)) {
> + for (i = 0; i < MCAST_MAX ; i++) {
> + iowrite16(0, ioaddr + MID_1L + 8 * i);
> + iowrite16(0, ioaddr + MID_1M + 8 * i);
> + iowrite16(0, ioaddr + MID_1H + 8 * i);
> + }
> + } else if (netdev_mc_count(dev) <= MCAST_MAX) {
> + i = 0;
> + netdev_for_each_mc_addr(ha, dev) {
> + adrp = (u16 *) ha->addr;
> + iowrite16(adrp[0], ioaddr + MID_1L + 8 * i);
> + iowrite16(adrp[1], ioaddr + MID_1M + 8 * i);
> + iowrite16(adrp[2], ioaddr + MID_1H + 8 * i);
> + i++;
> + }
What about the unused exact match entries? And why is the empty case
special?
> + }
> + /* Otherwise, Enable multicast hash table function. */
> + else {
> + u16 hash_table[4] = { 0, };
> u32 crc;
>
> - for (i = 0; i < 4; i++)
> - hash_table[i] = 0;
> + lp->mcr0 |= 0x0100;
>
> + for (i = 0; i < MCAST_MAX ; i++) {
> + iowrite16(0, ioaddr + MID_1L + 8 * i);
> + iowrite16(0, ioaddr + MID_1M + 8 * i);
> + iowrite16(0, ioaddr + MID_1H + 8 * i);
> + }
> +
> + /* Build multicast hash table */
> netdev_for_each_mc_addr(ha, dev) {
> char *addrs = ha->addr;
>
> if (!(*addrs & 1))
> continue;
>
> - crc = ether_crc_le(6, addrs);
> + crc = ether_crc(ETH_ALEN, addrs);
You're reversing the order of bits in the CRC, which is not mentioned in
the commit message; are you sure that's right?
> crc >>= 26;
> - hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
> + hash_table[crc >> 4] |= 1 << (crc & 0xf);
> }
> +
> /* Fill the MAC hash tables with their values */
> iowrite16(hash_table[0], ioaddr + MAR0);
> iowrite16(hash_table[1], ioaddr + MAR1);
> iowrite16(hash_table[2], ioaddr + MAR2);
> iowrite16(hash_table[3], ioaddr + MAR3);
> }
> - /* Multicast Address 1~4 case */
> - i = 0;
> - netdev_for_each_mc_addr(ha, dev) {
> - if (i < MCAST_MAX) {
> - adrp = (u16 *) ha->addr;
> - iowrite16(adrp[0], ioaddr + MID_1L + 8 * i);
> - iowrite16(adrp[1], ioaddr + MID_1M + 8 * i);
> - iowrite16(adrp[2], ioaddr + MID_1H + 8 * i);
> - } else {
> - iowrite16(0xffff, ioaddr + MID_1L + 8 * i);
> - iowrite16(0xffff, ioaddr + MID_1M + 8 * i);
> - iowrite16(0xffff, ioaddr + MID_1H + 8 * i);
> - }
This conflicts with my patch in
<http://article.gmane.org/gmane.linux.network/174926> which Dave has
already applied (but not pushed out).
Ben.
> - i++;
> - }
> + iowrite16(lp->mcr0, ioaddr);
> +
> + spin_unlock_irqrestore(&lp->lock, flags);
> }
>
> static void netdev_get_drvinfo(struct net_device *dev,
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 828 bytes --]
^ permalink raw reply
* (unknown),
From: Debashis Dutt @ 2010-10-21 3:07 UTC (permalink / raw)
To: netdev@vger.kernel.org, David S. Miller
Cc: Rasesh Mody, Jing Huang, Akshay Mathur
Hi,
For the Brocade 10G Ethernet driver (bna) we want to implement a set of
operations which is not supported by current tools like ethtool.
Examples of such operations would be
a) Queries related to CEE, if the link is CEE.
b) Get traces from firmware.
I was wondering what would be right approach to take here:
a) use debugfs (like the Chelsio cxgb4 driver)
b) use SIOCDEVPRIVATE for the pass through IOCTL defined in
struct net_device_ops{}
As per comments in the header file, b) should not be used
since this IOCTL is supposed to be deprecated.
c) use procfs / sysfs (these may not scale, in our opinion)
Please suggest.
Thanks
--Debashis
^ permalink raw reply
* Question w.r.t debugfs / netdevice pass-through IOCTL
From: Debashis Dutt @ 2010-10-21 3:26 UTC (permalink / raw)
To: netdev@vger.kernel.org
Hi,
For the Brocade 10G Ethernet driver (bna) we want to implement a set of operations which is not supported by current tools like ethtool.
Examples of such operations would be
a) Queries related to CEE, if the link is CEE.
b) Get traces from firmware.
I was wondering what would be right approach to take here:
a) use debugfs (like the Chelsio cxgb4 driver)
b) use SIOCDEVPRIVATE for the pass through IOCTL defined in
struct net_device_ops{}
As per comments in the header file, b) should not be used
since this IOCTL is supposed to be deprecated.
c) use procfs / sysfs (these may not scale, in our opinion)
Please suggest.
Thanks
--Debashis
^ permalink raw reply
* Re: [PATCH v2 07/14] ethtool: Add support for vlan accleration.
From: John Fastabend @ 2010-10-21 3:27 UTC (permalink / raw)
To: Jesse Gross; +Cc: David Miller, netdev@vger.kernel.org
In-Reply-To: <1287618974-4714-8-git-send-email-jesse@nicira.com>
On 10/20/2010 4:56 PM, Jesse Gross wrote:
> Now that vlan acceleration is handled consistently regardless of usage,
> it is possible to enable and disable it at will. This adds support for
> Ethtool operations that change the offloading status for debugging
> purposes, similar to other forms of hardware acceleration.
>
Jesse,
Not sure if this is enough to get dynamic toggling like this
dev->hard_header_len is set depending on offloads at init time in
vlan_dev_init(). By changing this LL_RESERVED_SPACE won't work
correctly and we end up having to call pskb_expand_head(). I think
this might end up hurting performance.
That said I think I can probably get this working by fixing up the
header_ops in vlan_dev.c. And while I'm at it add a vlan_header_cache
and vlan_header_cache_update routines. I'll try to get something out
tomorrow in the meantime nothing too bad is happening.
Thanks,
John.
> Signed-off-by: Jesse Gross <jesse@nicira.com>
> ---
> include/linux/ethtool.h | 2 ++
> net/core/ethtool.c | 3 ++-
> 2 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
> index 8a3338c..6628a50 100644
> --- a/include/linux/ethtool.h
> +++ b/include/linux/ethtool.h
> @@ -309,6 +309,8 @@ struct ethtool_perm_addr {
> * flag differs from the read-only value.
> */
> enum ethtool_flags {
> + ETH_FLAG_TXVLAN = (1 << 7), /* TX VLAN offload enabled */
> + ETH_FLAG_RXVLAN = (1 << 8), /* RX VLAN offload enabled */
> ETH_FLAG_LRO = (1 << 15), /* LRO is enabled */
> ETH_FLAG_NTUPLE = (1 << 27), /* N-tuple filters enabled */
> ETH_FLAG_RXHASH = (1 << 28),
> diff --git a/net/core/ethtool.c b/net/core/ethtool.c
> index 685c700..956a9f4 100644
> --- a/net/core/ethtool.c
> +++ b/net/core/ethtool.c
> @@ -132,7 +132,8 @@ EXPORT_SYMBOL(ethtool_op_set_ufo);
> * NETIF_F_xxx values in include/linux/netdevice.h
> */
> static const u32 flags_dup_features =
> - (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
> + (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
> + ETH_FLAG_RXHASH);
>
> u32 ethtool_op_get_flags(struct net_device *dev)
> {
^ permalink raw reply
* Re: [PATCH v2 04/14] vlan: Enable software emulation for vlan accleration.
From: John Fastabend @ 2010-10-21 3:32 UTC (permalink / raw)
To: Jesse Gross; +Cc: David Miller, netdev@vger.kernel.org
In-Reply-To: <1287618974-4714-5-git-send-email-jesse@nicira.com>
On 10/20/2010 4:56 PM, Jesse Gross wrote:
> Currently users of hardware vlan accleration need to know whether
> the device supports it before generating packets. However, vlan
> acceleration will soon be available in a more flexible manner so
> knowing ahead of time becomes much more difficult. This adds
> a software fallback path for vlan packets on devices without the
> necessary offloading support, similar to other types of hardware
> accleration.
>
> Signed-off-by: Jesse Gross <jesse@nicira.com>
> ---
> include/linux/netdevice.h | 14 +++++++++++---
> net/core/dev.c | 36 +++++++++++++++++++++++++++++++++---
> 2 files changed, 44 insertions(+), 6 deletions(-)
>
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 880d565..2861565 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -2248,9 +2248,17 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features)
>
> static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
> {
> - return skb_is_gso(skb) &&
> - (!skb_gso_ok(skb, dev->features) ||
> - unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
> + if (skb_is_gso(skb)) {
> + int features = dev->features;
> +
> + if (skb->protocol == htons(ETH_P_8021Q) || skb->vlan_tci)
> + features &= dev->vlan_features;
> +
> + return (!skb_gso_ok(skb, features) ||
> + unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
> + }
> +
> + return 0;
> }
>
> static inline void netif_set_gso_max_size(struct net_device *dev,
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 4c3ac53..1bfd96b 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -1694,7 +1694,12 @@ static bool can_checksum_protocol(unsigned long features, __be16 protocol)
>
> static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
> {
> - if (can_checksum_protocol(dev->features, skb->protocol))
> + int features = dev->features;
> +
> + if (vlan_tx_tag_present(skb))
> + features &= dev->vlan_features;
> +
> + if (can_checksum_protocol(features, skb->protocol))
> return true;
>
> if (skb->protocol == htons(ETH_P_8021Q)) {
> @@ -1793,6 +1798,16 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
> __be16 type = skb->protocol;
> int err;
>
> + if (type == htons(ETH_P_8021Q)) {
> + struct vlan_ethhdr *veh;
> +
> + if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
> + return ERR_PTR(-EINVAL);
> +
> + veh = (struct vlan_ethhdr *)skb->data;
> + type = veh->h_vlan_encapsulated_proto;
> + }
> +
> skb_reset_mac_header(skb);
> skb->mac_len = skb->network_header - skb->mac_header;
> __skb_pull(skb, skb->mac_len);
> @@ -1964,9 +1979,14 @@ static inline void skb_orphan_try(struct sk_buff *skb)
> static inline int skb_needs_linearize(struct sk_buff *skb,
> struct net_device *dev)
> {
> + int features = dev->features;
> +
> + if (skb->protocol == htons(ETH_P_8021Q) || vlan_tx_tag_present(skb))
> + features &= dev->vlan_features;
> +
> return skb_is_nonlinear(skb) &&
> - ((skb_has_frag_list(skb) && !(dev->features & NETIF_F_FRAGLIST)) ||
> - (skb_shinfo(skb)->nr_frags && (!(dev->features & NETIF_F_SG) ||
> + ((skb_has_frag_list(skb) && !(features & NETIF_F_FRAGLIST)) ||
> + (skb_shinfo(skb)->nr_frags && (!(features & NETIF_F_SG) ||
> illegal_highdma(dev, skb))));
> }
>
> @@ -1989,6 +2009,15 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
>
> skb_orphan_try(skb);
>
> + if (vlan_tx_tag_present(skb) &&
> + !(dev->features & NETIF_F_HW_VLAN_TX)) {
> + skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb));
> + if (unlikely(!skb))
> + goto out;
> +
> + skb->vlan_tci = 0;
> + }
> +
Nice set of patches! If we tag frames in dev_hard_start_xmit() can we consolidate
the offload enabled and non-offloaded net_device_ops in 8021q. And then not tag in
vlan_dev_hard_start_xmit? I'll post an example thinking out loud here.
Thanks,
John.
> if (netif_needs_gso(dev, skb)) {
> if (unlikely(dev_gso_segment(skb)))
> goto out_kfree_skb;
> @@ -2050,6 +2079,7 @@ out_kfree_gso_skb:
> skb->destructor = DEV_GSO_CB(skb)->destructor;
> out_kfree_skb:
> kfree_skb(skb);
> +out:
> return rc;
> }
>
^ permalink raw reply
* [RFC PATCH] net: consolidate 8021q tagging
From: John Fastabend @ 2010-10-21 3:40 UTC (permalink / raw)
To: netdev; +Cc: john.r.fastabend, jesse, davem
This is an example to illustrate my comment to Jesse Gross
patch where he adds vlan tagging for the non offload case
to dev_hard_start_xmit. It compiles but otherwise I've not
tested it.
If we tag vlan packets in dev_hard_start_xmit we no longer
need to actually tag them here just set the vlan_tci field
in the skb and let the stack get them at the bottom.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
---
net/8021q/vlan_dev.c | 105 +++-----------------------------------------------
1 files changed, 7 insertions(+), 98 deletions(-)
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 14e3d1f..78b1618 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -326,24 +326,12 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
*/
if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
- unsigned int orig_headroom = skb_headroom(skb);
u16 vlan_tci;
-
- vlan_dev_info(dev)->cnt_encap_on_xmit++;
-
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
- skb = __vlan_put_tag(skb, vlan_tci);
- if (!skb) {
- txq->tx_dropped++;
- return NETDEV_TX_OK;
- }
-
- if (orig_headroom < VLAN_HLEN)
- vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
+ skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
}
-
skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
len = skb->len;
ret = dev_queue_xmit(skb);
@@ -357,32 +345,6 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
return ret;
}
-static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- int i = skb_get_queue_mapping(skb);
- struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
- u16 vlan_tci;
- unsigned int len;
- int ret;
-
- vlan_tci = vlan_dev_info(dev)->vlan_id;
- vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
- skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
-
- skb->dev = vlan_dev_info(dev)->real_dev;
- len = skb->len;
- ret = dev_queue_xmit(skb);
-
- if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
- txq->tx_packets++;
- txq->tx_bytes += len;
- } else
- txq->tx_dropped++;
-
- return ret;
-}
-
static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb)
{
struct net_device *rdev = vlan_dev_info(dev)->real_dev;
@@ -719,8 +681,7 @@ static const struct header_ops vlan_header_ops = {
.parse = eth_header_parse,
};
-static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops,
- vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq;
+static const struct net_device_ops vlan_netdev_ops, vlan_netdev_ops_sq;
static int vlan_dev_init(struct net_device *dev)
{
@@ -755,19 +716,16 @@ static int vlan_dev_init(struct net_device *dev)
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
dev->header_ops = real_dev->header_ops;
dev->hard_header_len = real_dev->hard_header_len;
- if (real_dev->netdev_ops->ndo_select_queue)
- dev->netdev_ops = &vlan_netdev_accel_ops_sq;
- else
- dev->netdev_ops = &vlan_netdev_accel_ops;
} else {
dev->header_ops = &vlan_header_ops;
dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
- if (real_dev->netdev_ops->ndo_select_queue)
- dev->netdev_ops = &vlan_netdev_ops_sq;
- else
- dev->netdev_ops = &vlan_netdev_ops;
}
+ if (real_dev->netdev_ops->ndo_select_queue)
+ dev->netdev_ops = &vlan_netdev_ops_sq;
+ else
+ dev->netdev_ops = &vlan_netdev_ops;
+
if (is_vlan_dev(real_dev))
subclass = 1;
@@ -908,30 +866,6 @@ static const struct net_device_ops vlan_netdev_ops = {
#endif
};
-static const struct net_device_ops vlan_netdev_accel_ops = {
- .ndo_change_mtu = vlan_dev_change_mtu,
- .ndo_init = vlan_dev_init,
- .ndo_uninit = vlan_dev_uninit,
- .ndo_open = vlan_dev_open,
- .ndo_stop = vlan_dev_stop,
- .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = vlan_dev_set_mac_address,
- .ndo_set_rx_mode = vlan_dev_set_rx_mode,
- .ndo_set_multicast_list = vlan_dev_set_rx_mode,
- .ndo_change_rx_flags = vlan_dev_change_rx_flags,
- .ndo_do_ioctl = vlan_dev_ioctl,
- .ndo_neigh_setup = vlan_dev_neigh_setup,
- .ndo_get_stats64 = vlan_dev_get_stats64,
-#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
- .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
- .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
- .ndo_fcoe_enable = vlan_dev_fcoe_enable,
- .ndo_fcoe_disable = vlan_dev_fcoe_disable,
- .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
-#endif
-};
-
static const struct net_device_ops vlan_netdev_ops_sq = {
.ndo_select_queue = vlan_dev_select_queue,
.ndo_change_mtu = vlan_dev_change_mtu,
@@ -957,31 +891,6 @@ static const struct net_device_ops vlan_netdev_ops_sq = {
#endif
};
-static const struct net_device_ops vlan_netdev_accel_ops_sq = {
- .ndo_select_queue = vlan_dev_select_queue,
- .ndo_change_mtu = vlan_dev_change_mtu,
- .ndo_init = vlan_dev_init,
- .ndo_uninit = vlan_dev_uninit,
- .ndo_open = vlan_dev_open,
- .ndo_stop = vlan_dev_stop,
- .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = vlan_dev_set_mac_address,
- .ndo_set_rx_mode = vlan_dev_set_rx_mode,
- .ndo_set_multicast_list = vlan_dev_set_rx_mode,
- .ndo_change_rx_flags = vlan_dev_change_rx_flags,
- .ndo_do_ioctl = vlan_dev_ioctl,
- .ndo_neigh_setup = vlan_dev_neigh_setup,
- .ndo_get_stats64 = vlan_dev_get_stats64,
-#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
- .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
- .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
- .ndo_fcoe_enable = vlan_dev_fcoe_enable,
- .ndo_fcoe_disable = vlan_dev_fcoe_disable,
- .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
-#endif
-};
-
void vlan_setup(struct net_device *dev)
{
ether_setup(dev);
^ permalink raw reply related
* Re: Question w.r.t debugfs / netdevice pass-through IOCTL
From: Stephen Hemminger @ 2010-10-21 4:19 UTC (permalink / raw)
To: Debashis Dutt; +Cc: netdev@vger.kernel.org
In-Reply-To: <F363E7AC84E1B646A0358B281A46F4AEABA0FFCC68@HQ1-EXCH03.corp.brocade.com>
On Wed, 20 Oct 2010 20:26:50 -0700
Debashis Dutt <ddutt@Brocade.COM> wrote:
> Hi,
>
> For the Brocade 10G Ethernet driver (bna) we want to implement a set of operations which is not supported by current tools like ethtool.
>
> Examples of such operations would be
> a) Queries related to CEE, if the link is CEE.
> b) Get traces from firmware.
>
> I was wondering what would be right approach to take here:
> a) use debugfs (like the Chelsio cxgb4 driver)
Works as long as they are really debug operations. The debugfs isn't always
available, and support should be a config option for your driver.
> b) use SIOCDEVPRIVATE for the pass through IOCTL defined in
> struct net_device_ops{}
The problem with ioctl is it doesn't work for 32 bit user space
compatiablity. The ioctl compat layer does not have enough context
to translate SIOCDEVPRIVATE
> As per comments in the header file, b) should not be used
> since this IOCTL is supposed to be deprecated.
> c) use procfs / sysfs (these may not scale, in our opinion)
Although less common, there were drivers putting things in /proc/net/xxx/ethX
--
^ permalink raw reply
* [PATCH] vmxnet3: remove set_flag_le{16,64} helpers
From: Harvey Harrison @ 2010-10-21 6:28 UTC (permalink / raw)
To: sbhatewara; +Cc: netdev, shemminger
It's easier to just annotate the constants as little endian types and set/clear
the flags directly.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
---
drivers/net/vmxnet3/upt1_defs.h | 8 +++---
drivers/net/vmxnet3/vmxnet3_defs.h | 6 ++--
drivers/net/vmxnet3/vmxnet3_drv.c | 35 +++++++-------------------------
drivers/net/vmxnet3/vmxnet3_ethtool.c | 14 +++++-------
drivers/net/vmxnet3/vmxnet3_int.h | 4 ---
5 files changed, 21 insertions(+), 46 deletions(-)
diff --git a/drivers/net/vmxnet3/upt1_defs.h b/drivers/net/vmxnet3/upt1_defs.h
index 37108fb..969c751 100644
--- a/drivers/net/vmxnet3/upt1_defs.h
+++ b/drivers/net/vmxnet3/upt1_defs.h
@@ -88,9 +88,9 @@ struct UPT1_RSSConf {
/* features */
enum {
- UPT1_F_RXCSUM = 0x0001, /* rx csum verification */
- UPT1_F_RSS = 0x0002,
- UPT1_F_RXVLAN = 0x0004, /* VLAN tag stripping */
- UPT1_F_LRO = 0x0008,
+ UPT1_F_RXCSUM = cpu_to_le64(0x0001), /* rx csum verification */
+ UPT1_F_RSS = cpu_to_le64(0x0002),
+ UPT1_F_RXVLAN = cpu_to_le64(0x0004), /* VLAN tag stripping */
+ UPT1_F_LRO = cpu_to_le64(0x0008),
};
#endif
diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h
index ca7727b..4d84912 100644
--- a/drivers/net/vmxnet3/vmxnet3_defs.h
+++ b/drivers/net/vmxnet3/vmxnet3_defs.h
@@ -523,9 +523,9 @@ struct Vmxnet3_RxFilterConf {
#define VMXNET3_PM_MAX_PATTERN_SIZE 128
#define VMXNET3_PM_MAX_MASK_SIZE (VMXNET3_PM_MAX_PATTERN_SIZE / 8)
-#define VMXNET3_PM_WAKEUP_MAGIC 0x01 /* wake up on magic pkts */
-#define VMXNET3_PM_WAKEUP_FILTER 0x02 /* wake up on pkts matching
- * filters */
+#define VMXNET3_PM_WAKEUP_MAGIC cpu_to_le16(0x01) /* wake up on magic pkts */
+#define VMXNET3_PM_WAKEUP_FILTER cpu_to_le16(0x02) /* wake up on pkts matching
+ * filters */
struct Vmxnet3_PM_PktFilter {
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 198ce92..ce292d4 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1548,23 +1548,6 @@ vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
}
}
-
-inline void set_flag_le16(__le16 *data, u16 flag)
-{
- *data = cpu_to_le16(le16_to_cpu(*data) | flag);
-}
-
-inline void set_flag_le64(__le64 *data, u64 flag)
-{
- *data = cpu_to_le64(le64_to_cpu(*data) | flag);
-}
-
-inline void reset_flag_le64(__le64 *data, u64 flag)
-{
- *data = cpu_to_le64(le64_to_cpu(*data) & ~flag);
-}
-
-
static void
vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
{
@@ -1580,8 +1563,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
adapter->vlan_grp = grp;
/* update FEATURES to device */
- set_flag_le64(&devRead->misc.uptFeatures,
- UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
/*
@@ -1604,7 +1586,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
adapter->vlan_grp = NULL;
- if (le64_to_cpu(devRead->misc.uptFeatures) & UPT1_F_RXVLAN) {
+ if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) {
int i;
for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
@@ -1617,8 +1599,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
/* update FEATURES to device */
- reset_flag_le64(&devRead->misc.uptFeatures,
- UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
}
@@ -1779,15 +1760,15 @@ vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
/* set up feature flags */
if (adapter->rxcsum)
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXCSUM);
+ devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
if (adapter->lro) {
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_LRO);
+ devRead->misc.uptFeatures |= UPT1_F_LRO;
devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS);
}
if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX) &&
adapter->vlan_grp) {
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
}
devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu);
@@ -2594,7 +2575,7 @@ vmxnet3_suspend(struct device *device)
memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
- set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_FILTER);
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
i++;
}
@@ -2642,7 +2623,7 @@ vmxnet3_suspend(struct device *device)
skip_arp:
if (adapter->wol & WAKE_MAGIC)
- set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_MAGIC);
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
pmConf->numFilters = i;
diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index 7e4b5a8..b79070b 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -50,13 +50,11 @@ vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
adapter->rxcsum = val;
if (netif_running(netdev)) {
if (val)
- set_flag_le64(
- &adapter->shared->devRead.misc.uptFeatures,
- UPT1_F_RXCSUM);
+ adapter->shared->devRead.misc.uptFeatures |=
+ UPT1_F_RXCSUM;
else
- reset_flag_le64(
- &adapter->shared->devRead.misc.uptFeatures,
- UPT1_F_RXCSUM);
+ adapter->shared->devRead.misc.uptFeatures &=
+ ~UPT1_F_RXCSUM;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
@@ -292,10 +290,10 @@ vmxnet3_set_flags(struct net_device *netdev, u32 data)
/* update harware LRO capability accordingly */
if (lro_requested)
adapter->shared->devRead.misc.uptFeatures |=
- cpu_to_le64(UPT1_F_LRO);
+ UPT1_F_LRO;
else
adapter->shared->devRead.misc.uptFeatures &=
- cpu_to_le64(~UPT1_F_LRO);
+ ~UPT1_F_LRO;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
}
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 2121c73..46aee6d 100644
--- a/drivers/net/vmxnet3/vmxnet3_int.h
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -353,10 +353,6 @@ struct vmxnet3_adapter {
#define VMXNET3_MAX_ETH_HDR_SIZE 22
#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
-void set_flag_le16(__le16 *data, u16 flag);
-void set_flag_le64(__le64 *data, u64 flag);
-void reset_flag_le64(__le64 *data, u64 flag);
-
int
vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
--
1.7.1
^ permalink raw reply related
* [PATCHv2] vmxnet3: remove set_flag_le{16,64} helpers
From: Harvey Harrison @ 2010-10-21 6:32 UTC (permalink / raw)
To: sbhatewara; +Cc: netdev, shemminger
It's easier to just annotate the constants as little endian types and set/clear
the flags directly.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
---i
Sorry, missed a git add and left a line out of the previous patch.
drivers/net/vmxnet3/upt1_defs.h | 8 +++---
drivers/net/vmxnet3/vmxnet3_defs.h | 6 ++--
drivers/net/vmxnet3/vmxnet3_drv.c | 37 ++++++++-------------------------
drivers/net/vmxnet3/vmxnet3_ethtool.c | 14 +++++-------
drivers/net/vmxnet3/vmxnet3_int.h | 4 ---
5 files changed, 22 insertions(+), 47 deletions(-)
diff --git a/drivers/net/vmxnet3/upt1_defs.h b/drivers/net/vmxnet3/upt1_defs.h
index 37108fb..969c751 100644
--- a/drivers/net/vmxnet3/upt1_defs.h
+++ b/drivers/net/vmxnet3/upt1_defs.h
@@ -88,9 +88,9 @@ struct UPT1_RSSConf {
/* features */
enum {
- UPT1_F_RXCSUM = 0x0001, /* rx csum verification */
- UPT1_F_RSS = 0x0002,
- UPT1_F_RXVLAN = 0x0004, /* VLAN tag stripping */
- UPT1_F_LRO = 0x0008,
+ UPT1_F_RXCSUM = cpu_to_le64(0x0001), /* rx csum verification */
+ UPT1_F_RSS = cpu_to_le64(0x0002),
+ UPT1_F_RXVLAN = cpu_to_le64(0x0004), /* VLAN tag stripping */
+ UPT1_F_LRO = cpu_to_le64(0x0008),
};
#endif
diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h
index ca7727b..4d84912 100644
--- a/drivers/net/vmxnet3/vmxnet3_defs.h
+++ b/drivers/net/vmxnet3/vmxnet3_defs.h
@@ -523,9 +523,9 @@ struct Vmxnet3_RxFilterConf {
#define VMXNET3_PM_MAX_PATTERN_SIZE 128
#define VMXNET3_PM_MAX_MASK_SIZE (VMXNET3_PM_MAX_PATTERN_SIZE / 8)
-#define VMXNET3_PM_WAKEUP_MAGIC 0x01 /* wake up on magic pkts */
-#define VMXNET3_PM_WAKEUP_FILTER 0x02 /* wake up on pkts matching
- * filters */
+#define VMXNET3_PM_WAKEUP_MAGIC cpu_to_le16(0x01) /* wake up on magic pkts */
+#define VMXNET3_PM_WAKEUP_FILTER cpu_to_le16(0x02) /* wake up on pkts matching
+ * filters */
struct Vmxnet3_PM_PktFilter {
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 198ce92..c8d1a14 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1548,23 +1548,6 @@ vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
}
}
-
-inline void set_flag_le16(__le16 *data, u16 flag)
-{
- *data = cpu_to_le16(le16_to_cpu(*data) | flag);
-}
-
-inline void set_flag_le64(__le64 *data, u64 flag)
-{
- *data = cpu_to_le64(le64_to_cpu(*data) | flag);
-}
-
-inline void reset_flag_le64(__le64 *data, u64 flag)
-{
- *data = cpu_to_le64(le64_to_cpu(*data) & ~flag);
-}
-
-
static void
vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
{
@@ -1580,8 +1563,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
adapter->vlan_grp = grp;
/* update FEATURES to device */
- set_flag_le64(&devRead->misc.uptFeatures,
- UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
/*
@@ -1604,7 +1586,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
adapter->vlan_grp = NULL;
- if (le64_to_cpu(devRead->misc.uptFeatures) & UPT1_F_RXVLAN) {
+ if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) {
int i;
for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
@@ -1617,8 +1599,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
/* update FEATURES to device */
- reset_flag_le64(&devRead->misc.uptFeatures,
- UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
}
@@ -1779,15 +1760,15 @@ vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
/* set up feature flags */
if (adapter->rxcsum)
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXCSUM);
+ devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
if (adapter->lro) {
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_LRO);
+ devRead->misc.uptFeatures |= UPT1_F_LRO;
devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS);
}
if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX) &&
adapter->vlan_grp) {
- set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXVLAN);
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
}
devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu);
@@ -2594,7 +2575,7 @@ vmxnet3_suspend(struct device *device)
memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
- set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_FILTER);
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
i++;
}
@@ -2636,13 +2617,13 @@ vmxnet3_suspend(struct device *device)
pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */
in_dev_put(in_dev);
- set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_FILTER);
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
i++;
}
skip_arp:
if (adapter->wol & WAKE_MAGIC)
- set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_MAGIC);
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
pmConf->numFilters = i;
diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index 7e4b5a8..b79070b 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -50,13 +50,11 @@ vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
adapter->rxcsum = val;
if (netif_running(netdev)) {
if (val)
- set_flag_le64(
- &adapter->shared->devRead.misc.uptFeatures,
- UPT1_F_RXCSUM);
+ adapter->shared->devRead.misc.uptFeatures |=
+ UPT1_F_RXCSUM;
else
- reset_flag_le64(
- &adapter->shared->devRead.misc.uptFeatures,
- UPT1_F_RXCSUM);
+ adapter->shared->devRead.misc.uptFeatures &=
+ ~UPT1_F_RXCSUM;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
@@ -292,10 +290,10 @@ vmxnet3_set_flags(struct net_device *netdev, u32 data)
/* update harware LRO capability accordingly */
if (lro_requested)
adapter->shared->devRead.misc.uptFeatures |=
- cpu_to_le64(UPT1_F_LRO);
+ UPT1_F_LRO;
else
adapter->shared->devRead.misc.uptFeatures &=
- cpu_to_le64(~UPT1_F_LRO);
+ ~UPT1_F_LRO;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
}
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 2121c73..46aee6d 100644
--- a/drivers/net/vmxnet3/vmxnet3_int.h
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -353,10 +353,6 @@ struct vmxnet3_adapter {
#define VMXNET3_MAX_ETH_HDR_SIZE 22
#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
-void set_flag_le16(__le16 *data, u16 flag);
-void set_flag_le64(__le64 *data, u64 flag);
-void reset_flag_le64(__le64 *data, u64 flag);
-
int
vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
--
1.7.1
^ permalink raw reply related
* TCP always advertises zero window.
From: Li Yu @ 2010-10-21 7:17 UTC (permalink / raw)
To: netdev@vger.kernel.org
Hi,
We found this on RHEL 5.4, the kernel is 2.6.18-164.11.1.el5, and also suspect that recent kernel also has similar problem.
First, we turned off both TCP window scaling option and MTU probe feature. On some servers, we found that some servers may always advertised another ends zero received window, below are some captured traffic (by tcpdump -S -nn -vv):
16:24:59.990545 IP (tos 0x0, ttl 64, id 37079, offset 0, flags [DF], proto: TCP (6), length: 52) 10.1.157.3.2904 > 10.1.157.4.2903: ., cksum 0x96df (correct), 3830348746:3830348746(0) ack 1951026211 win 65160 <nop,nop,timestamp 1040455485 1040632013>
16:25:00.054563 IP (tos 0x0, ttl 64, id 47424, offset 0, flags [DF], proto: TCP (6), length: 460) 10.1.157.4.2903 > 10.1.157.3.2904: P 1951026211:1951026619(408) ack 3830348746 win 0 <nop,nop,timestamp 1040632077 1040455485>
16:25:00.054579 IP (tos 0x0, ttl 64, id 37080, offset 0, flags [DF], proto: TCP (6), length: 52) 10.1.157.3.2904 > 10.1.157.4.2903: ., cksum 0x94c7 (correct), 3830348746:3830348746(0) ack 1951026619 win 65160 <nop,nop,timestamp 1040455549 1040632077>
16:25:01.451253 IP (tos 0x0, ttl 64, id 47425, offset 0, flags [DF], proto: TCP (6), length: 4148) 10.1.157.4.2903 > 10.1.157.3.2904: P 1951026619:1951030715(4096) ack 3830348746 win 0 <nop,nop,timestamp 1040633474 1040455549>
As above example show, 10.1.157.4 always advertise zero window forever. I wrote a small toy kernel module to show TCP internal socket status as below:
tcp-snapshot:sock:
sk->sk_family=2
sk->sk_state=1
sk->sk_reuse=1
sk->sk_bound_dev_if=0
atomic_read(&sk->sk_refcnt)=3
sk->sk_hash=117920776
sk->sk_shutdown=0
sk->sk_no_check=0
sk->sk_userlocks=7
sk->sk_protocol=6
sk->sk_type=1
sk->sk_rcvbuf=131072
list_empty(&sk->sk_sleep->task_list)=0
atomic_read(&sk->sk_rmem_alloc)=0
atomic_read(&sk->sk_wmem_alloc)=0
atomic_read(&sk->sk_omem_alloc)=0
sk->sk_receive_queue.qlen=0
sk->sk_write_queue.qlen=0
sk->sk_async_wait_queue.qlen=0
sk->sk_error_queue.qlen=0
sk->sk_wmem_queued=0
sk->sk_forward_alloc=8192
sk->sk_allocation=d0
sk->sk_sndbuf=131072
sk->sk_route_caps=1143a9
sk->sk_gso_type=1
sk->sk_rcvlowat=1
sk->sk_flags=300
sk->sk_lingertime=0
sk->sk_err=0
sk->sk_err_soft=0
sk->sk_ack_backlog=0
sk->sk_max_ack_backlog=128
sk->sk_priority=0
sk->sk_rcvtimeo=9223372036854775807
sk->sk_sndtimeo=9223372036854775807
sk->sk_protinfo=0000000000000000
sk->sk_stamp.tv_sec=18446744073709551615
sk->sk_stamp.tv_usec=18446744073709551615
sk->sk_socket=ffff81053ee71080
sk->sk_user_data=0000000000000000
sk->sk_sndmsg_page=ffff8103761ab220
sk->sk_sndmsg_off=475
sk->sk_send_head=0000000000000000
sk->sk_write_pending=0
tcp-snapshot:inet_sock:
inetsk->daddr=39d010a
inetsk->rcv_saddr=49d010a
inetsk->dport=580b
inetsk->num=b57
inetsk->saddr=49d010a
inetsk->uc_ttl=4294967295
inetsk->cmsg_flags=0
inetsk->opt=0000000000000000
inetsk->sport=570b
inetsk->id=5843
inetsk->tos=0
inetsk->mc_ttl=64
inetsk->pmtudisc=1
inetsk->recverr=0
inetsk->is_icsk=1
inetsk->freebind=0
inetsk->hdrincl=0
inetsk->mc_loop=1
inetsk->mc_index=2
inetsk->mc_addr=0
inetsk->mc_list=0000000000000000
tcp-snapshot:inet_connection_sk
icsk->icsk_accept_queue.rskq_defer_accept=0
icsk->icsk_accept_queue.listen_opt=0000000000000000
icsk->icsk_timeout=5336784156
icsk->icsk_rto=218
icsk->icsk_pmtu_cookie=1500
icsk->icsk_ca_state=0
icsk->icsk_retransmits=0
icsk->icsk_pending=0
icsk->icsk_backoff=0
icsk->icsk_syn_retries=0
icsk->icsk_probes_out=0
icsk->icsk_ext_hdr_len=0
icsk->icsk_ack.pending=0
icsk->icsk_ack.quick=0
icsk->icsk_ack.pingpong=1
icsk->icsk_ack.blocked=0
icsk->icsk_ack.ato=40
icsk->icsk_ack.timeout=5303454287
icsk->icsk_ack.lrcvtime=1008486952
icsk->icsk_ack.last_seg_size=6814
icsk->icsk_ack.rcv_mss=8688
icsk->icsk_mtup.enabled=0
icsk->icsk_mtup.search_high=1500
icsk->icsk_mtup.search_low=564
icsk->icsk_mtup.probe_size=0
tcp-snapshot:tcp_sock
tcpsk->tcp_header_len=32
tcpsk->pred_flags=0
tcpsk->rcv_nxt=3830348746
tcpsk->snd_nxt=1984376345
tcpsk->snd_una=1984376345
tcpsk->snd_sml=1984376345
tcpsk->rcv_tstamp=1041816640
tcpsk->lsndtime=1041816640
tcpsk->ucopy.prequeue.qlen=0
tcpsk->ucopy.task=0000000000000000
tcpsk->ucopy.iov=0000000000000000
tcpsk->ucopy.memory=0
tcpsk->ucopy.len=0
tcpsk->snd_wl1=3830348746
tcpsk->snd_wnd=65160
tcpsk->max_window=65524
tcpsk->mss_cache=1448
tcpsk->xmit_size_goal=31856
tcpsk->window_clamp=65535
tcpsk->rcv_ssthresh=5792
tcpsk->frto_highmark=0
tcpsk->reordering=3
tcpsk->frto_counter=0
tcpsk->nonagle=1
tcpsk->keepalive_probes=0
tcpsk->srtt=121
tcpsk->mdev=76
tcpsk->mdev_max=200
tcpsk->rttvar=203
tcpsk->rtt_seq=1984376345
tcpsk->packets_out=0
tcpsk->left_out=0
tcpsk->retrans_out=0
tcpsk->rx_opt.ts_recent_stamp=1287564284
tcpsk->rx_opt.ts_recent=1041640111
tcpsk->rx_opt.rcv_tsval=1041640111
tcpsk->rx_opt.rcv_tsecr=1041816640
tcpsk->rx_opt.saw_tstamp=1
tcpsk->rx_opt.tstamp_ok=1
tcpsk->rx_opt.dsack=0
tcpsk->rx_opt.wscale_ok=0
tcpsk->rx_opt.sack_ok=5
tcpsk->rx_opt.snd_wscale=0
tcpsk->rx_opt.rcv_wscale=0
tcpsk->rx_opt.eff_sacks=0
tcpsk->rx_opt.num_sacks=0
tcpsk->rx_opt.user_mss=0
tcpsk->rx_opt.mss_clamp=1460
tcpsk->snd_ssthresh=4
tcpsk->snd_cwnd=4
tcpsk->snd_cwnd_cnt=4
tcpsk->snd_cwnd_clamp=65535
tcpsk->snd_cwnd_used=2
tcpsk->snd_cwnd_stamp=1041816640
tcpsk->out_of_order_queue.qlen=0
tcpsk->rcv_wnd=0
tcpsk->rcv_wup=3830348746
tcpsk->write_seq=1984376345
tcpsk->pushed_seq=1984376345
tcpsk->copied_seq=3830348746
tcpsk->duplicate_sack[0].start_seq=3613713418
tcpsk->duplicate_sack[0].end_seq=3613714866
tcpsk->selective_acks[i].start_seq=3648234364
tcpsk->selective_acks[i].end_seq=3648247396
tcpsk->selective_acks[i].start_seq=3647855528
tcpsk->selective_acks[i].end_seq=3647856976
tcpsk->selective_acks[i].start_seq=3640487648
tcpsk->selective_acks[i].end_seq=3640496336
tcpsk->selective_acks[i].start_seq=3498843984
tcpsk->selective_acks[i].end_seq=3498845432
tcpsk->recv_sack_cache[i].start_seq=1226527628
tcpsk->recv_sack_cache[i].end_seq=1226549030
tcpsk->recv_sack_cache[i].start_seq=179088461
tcpsk->recv_sack_cache[i].end_seq=179091357
tcpsk->recv_sack_cache[i].start_seq=4042009662
tcpsk->recv_sack_cache[i].end_seq=4042011110
tcpsk->recv_sack_cache[i].start_seq=0
tcpsk->recv_sack_cache[i].end_seq=0
tcpsk->lost_skb_hint=0000000000000000
tcpsk->scoreboard_skb_hint=0000000000000000
tcpsk->retransmit_skb_hint=0000000000000000
tcpsk->forward_skb_hint=0000000000000000
tcpsk->fastpath_skb_hint=0000000000000000
tcpsk->fastpath_cnt_hint=15
tcpsk->lost_cnt_hint=6
tcpsk->retransmit_cnt_hint=0
tcpsk->forward_cnt_hint=9
tcpsk->advmss=1448
tcpsk->prior_ssthresh=5
tcpsk->lost_out=0
tcpsk->sacked_out=0
tcpsk->fackets_out=0
tcpsk->high_seq=1226549030
tcpsk->retrans_stamp=0
tcpsk->undo_marker=0
tcpsk->undo_retrans=1
tcpsk->urg_seq=0
tcpsk->urg_data=0
tcpsk->urg_mode=0
tcpsk->ecn_flags=0
tcpsk->snd_up=0
tcpsk->total_retrans=2110
tcpsk->bytes_acked=0
tcpsk->keepalive_time=0
tcpsk->keepalive_intvl=0
tcpsk->linger2=0
tcpsk->last_synq_overflow=0
tcpsk->rcv_rtt_est.rtt=15
tcpsk->rcv_rtt_est.seq=3830352454
tcpsk->rcv_rtt_est.time=1008486951
tcpsk->rcvq_space.space=468244
tcpsk->rcvq_space.seq=3830258350
tcpsk->rcvq_space.time=1008486952
tcpsk->mtu_probe.probe_seq_start=0
tcpsk->mtu_probe.probe_seq_end=0
We noticed that the tcpsk->rcv_wnd indeed is 0, but tcpsk->copied_seq equals with tcpsk->rcv_nxt, and sk->sk_rmem_alloc is 0, both latters mean that there has not any pending data in receive queue.
After some digging against source code, I found that __tcp_select_window() actually returns zero in such case. In my words, the function should resume window into non-zero value in this time (we have full free space on receive queue), is it right?
In such case, I think that tcpsk->rcv_ssthresh has an exceptional value, it is too small, which triggers skiping rest processing in __tcp_select_window(), leave zero window forever.
According to source code, only MTU probing success and receive some non-zero length of L7 payload could grow tcp_sock->rcv_ssthresh. Because of we turn off MTU probing and TCP only received some zero-window probe from another end, so it seem that we have not any chance to update tcp_sock->rcv_ssthresh at all, so a dead loop come here.
It seem that we lost some processing in skb_data_queue() to keep consistent between free space of receive queue and tcpsk->rcv_ssthresh, is it right? or I missed something or some wrongs in my understanding...
Thank you~
Yu
^ permalink raw reply
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