* [PATCH 3/3] be2net: Bug fix to properly update ethtool tx-checksumming after ethtool -K <ifname> tx off
From: Ajit Khaparde @ 2009-10-05 12:22 UTC (permalink / raw)
To: davem, netdev
This is a fix for a bug which was a result of wrong use of checksum offload flag.
The status of tx-checksumming was not changed from on to off
after a 'ethtool -K <ifname> tx off' operation.
Use the proper checksum offload flag NETIF_F_HW_CSUM instead of
NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM.
Patch is against net-2.6 tree.
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
---
drivers/net/benet/be_ethtool.c | 2 +-
drivers/net/benet/be_main.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index 11445df..cda5bf2 100644
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -358,7 +358,7 @@ const struct ethtool_ops be_ethtool_ops = {
.get_rx_csum = be_get_rx_csum,
.set_rx_csum = be_set_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = ethtool_op_set_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_hw_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index e86b2f3..6d5e81f 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1899,8 +1899,8 @@ static void be_netdev_init(struct net_device *netdev)
struct be_adapter *adapter = netdev_priv(netdev);
netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
- NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
- NETIF_F_IPV6_CSUM | NETIF_F_GRO;
+ NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
+ NETIF_F_GRO;
netdev->flags |= IFF_MULTICAST;
--
1.6.0.4
^ permalink raw reply related
* [PATCH 2/3] be2net: Fix a typo in be_cmds.h
From: Ajit Khaparde @ 2009-10-05 12:22 UTC (permalink / raw)
To: davem, netdev
MCC_STATUS_NOT_SUPPORTED should be decimal 66 not hex 66.
This patch fixes this typo. Patch against net-2.6 tree.
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
---
drivers/net/benet/be_cmds.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/benet/be_cmds.h b/drivers/net/benet/be_cmds.h
index 8b4c2cb..a86f917 100644
--- a/drivers/net/benet/be_cmds.h
+++ b/drivers/net/benet/be_cmds.h
@@ -62,7 +62,7 @@ enum {
MCC_STATUS_QUEUE_FLUSHING = 0x4,
/* The command is completing with a DMA error */
MCC_STATUS_DMA_FAILED = 0x5,
- MCC_STATUS_NOT_SUPPORTED = 0x66
+ MCC_STATUS_NOT_SUPPORTED = 66
};
#define CQE_STATUS_COMPL_MASK 0xFFFF
--
1.6.0.4
^ permalink raw reply related
* [PATCH 1/3] be2net: Bug Fix while accounting of multicast frames during netdev stats update
From: Ajit Khaparde @ 2009-10-05 12:21 UTC (permalink / raw)
To: davem, netdev
While updating the statistics to be passed via the get_stats,
tx multicast frames were being accounted instead of rx multicast frames.
This patch fixes the bug. This patch is against the net-2.6 tree.
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
---
drivers/net/benet/be_main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 2f9b501..e86b2f3 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -197,7 +197,7 @@ void netdev_stats_update(struct be_adapter *adapter)
/* no space available in linux */
dev_stats->tx_dropped = 0;
- dev_stats->multicast = port_stats->tx_multicastframes;
+ dev_stats->multicast = port_stats->rx_multicast_frames;
dev_stats->collisions = 0;
/* detailed tx_errors */
--
1.6.0.4
^ permalink raw reply related
* [net-next-2.6 PATCH 9/9] vxge: Version update.
From: Sreenivasa Honnur @ 2009-10-05 11:59 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Version Update.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN orig/drivers/net/vxge/vxge-version.h patch-9/drivers/net/vxge/vxge-version.h
--- orig/drivers/net/vxge/vxge-version.h 2009-10-04 22:43:59.000000000 -0700
+++ patch-9/drivers/net/vxge/vxge-version.h 2009-10-04 22:43:08.000000000 -0700
@@ -17,7 +17,7 @@
#define VXGE_VERSION_MAJOR "2"
#define VXGE_VERSION_MINOR "0"
-#define VXGE_VERSION_FIX "5"
-#define VXGE_VERSION_BUILD "18053"
+#define VXGE_VERSION_FIX "6"
+#define VXGE_VERSION_BUILD "18707"
#define VXGE_VERSION_FOR "k"
#endif
^ permalink raw reply
* [net-next-2.6 PATCH 8/9] vxge: Acquire correct lock based on interrupt context.
From: Sreenivasa Honnur @ 2009-10-05 11:58 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Added macros that check if the thread is in interrupt context or not to
acquire or release locks
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch7/drivers/net/vxge/vxge-main.c patch8/drivers/net/vxge/vxge-main.c
--- patch7/drivers/net/vxge/vxge-main.c 2009-09-04 02:13:34.000000000 -0700
+++ patch8/drivers/net/vxge/vxge-main.c 2009-09-04 02:18:15.000000000 -0700
@@ -97,10 +97,10 @@ static inline void VXGE_COMPLETE_VPATH_T
more = 0;
skb_ptr = completed;
- if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
+ if (vxge_spin_trylock(&fifo->tx_lock, flags)) {
vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
NR_SKB_COMPLETED, &more);
- spin_unlock_irqrestore(&fifo->tx_lock, flags);
+ vxge_spin_unlock(&fifo->tx_lock, flags);
}
/* free SKBs */
for (temp = completed; temp != skb_ptr; temp++)
diff -urpN patch7/drivers/net/vxge/vxge-main.h patch8/drivers/net/vxge/vxge-main.h
--- patch7/drivers/net/vxge/vxge-main.h 2009-09-04 02:05:36.000000000 -0700
+++ patch8/drivers/net/vxge/vxge-main.h 2009-09-04 02:16:40.000000000 -0700
@@ -89,6 +89,26 @@
#define VXGE_LL_MAX_FRAME_SIZE(dev) ((dev)->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE)
+#define vxge_spin_lock(l, f) { \
+ if (in_interrupt()) \
+ spin_lock(l); \
+ else \
+ spin_lock_irqsave(l, f); \
+}
+
+#define vxge_spin_trylock(l, f) \
+({ \
+ in_interrupt() ? \
+ spin_trylock(l) : spin_trylock_irqsave(l, f); \
+})
+
+#define vxge_spin_unlock(l, f) { \
+ if (in_interrupt()) \
+ spin_unlock(l); \
+ else \
+ spin_unlock_irqrestore(l, f); \
+}
+
enum vxge_reset_event {
/* reset events */
VXGE_LL_VPATH_RESET = 0,
^ permalink raw reply
* [net-next-2.6 PATCH 7/9] vxge: Allow multiple functions with INTA.
From: Sreenivasa Honnur @ 2009-10-05 11:57 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Allow multiple functions with INTA.
- Removed the condition to allow only one vpath with INTA
- Ensure that the alarm bit in titan_mask_all_int register is cleared when
driver exits.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch6/drivers/net/vxge/vxge-config.c patch7/drivers/net/vxge/vxge-config.cllow multiple functions with INTA.
- Removed the condition to allow only one vpath with INTA
- Ensure that the alarm bit in titan_mask_all_int register is cleared when
driver exits.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
--- patch6/drivers/net/vxge/vxge-config.c 2009-09-04 01:33:43.000000000 -0700
+++ patch7/drivers/net/vxge/vxge-config.c 2009-09-04 02:11:29.000000000 -0700
@@ -3882,6 +3882,30 @@ __vxge_hw_vpath_tim_configure(struct __v
return status;
}
+void
+vxge_hw_vpath_tti_ci_set(struct __vxge_hw_device *hldev, u32 vp_id)
+{
+ struct __vxge_hw_virtualpath *vpath;
+ struct vxge_hw_vpath_reg __iomem *vp_reg;
+ struct vxge_hw_vp_config *config;
+ u64 val64;
+
+ vpath = &hldev->virtual_paths[vp_id];
+ vp_reg = vpath->vp_reg;
+ config = vpath->vp_config;
+
+ if (config->fifo.enable == VXGE_HW_FIFO_ENABLE) {
+ val64 = readq(&vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_TX]);
+
+ if (config->tti.timer_ci_en != VXGE_HW_TIM_TIMER_CI_ENABLE) {
+ config->tti.timer_ci_en = VXGE_HW_TIM_TIMER_CI_ENABLE;
+ val64 |= VXGE_HW_TIM_CFG1_INT_NUM_TIMER_CI;
+ writeq(val64,
+ &vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_TX]);
+ }
+ }
+ return;
+}
/*
* __vxge_hw_vpath_initialize
* This routine is the final phase of init which initializes the
diff -urpN patch6/drivers/net/vxge/vxge-main.c patch7/drivers/net/vxge/vxge-main.c
--- patch6/drivers/net/vxge/vxge-main.c 2009-09-04 01:31:12.000000000 -0700
+++ patch7/drivers/net/vxge/vxge-main.c 2009-09-04 02:13:34.000000000 -0700
@@ -2435,7 +2435,6 @@ static int vxge_add_isr(struct vxgedev *
int ret = 0;
#ifdef CONFIG_PCI_MSI
int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
- u64 function_mode = vdev->config.device_hw_info.function_mode;
int pci_fun = PCI_FUNC(vdev->pdev->devfn);
if (vdev->config.intr_type == MSI_X)
@@ -2444,20 +2443,9 @@ static int vxge_add_isr(struct vxgedev *
if (ret) {
vxge_debug_init(VXGE_ERR,
"%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
- if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
- test_and_set_bit(__VXGE_STATE_CARD_UP,
- &driver_config->inta_dev_open))
- return VXGE_HW_FAIL;
- else {
- vxge_debug_init(VXGE_ERR,
- "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
- vdev->config.intr_type = INTA;
- vxge_hw_device_set_intr_type(vdev->devh,
- VXGE_HW_INTR_MODE_IRQLINE);
- vxge_close_vpaths(vdev, 1);
- vdev->no_of_vpath = 1;
- vdev->stats.vpaths_open = 1;
- }
+ vxge_debug_init(VXGE_ERR,
+ "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
+ vdev->config.intr_type = INTA;
}
if (vdev->config.intr_type == MSI_X) {
@@ -2505,24 +2493,11 @@ static int vxge_add_isr(struct vxgedev *
"%s: MSIX - %d Registration failed",
vdev->ndev->name, intr_cnt);
vxge_rem_msix_isr(vdev);
- if ((function_mode ==
- VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
- test_and_set_bit(__VXGE_STATE_CARD_UP,
- &driver_config->inta_dev_open))
- return VXGE_HW_FAIL;
- else {
- vxge_hw_device_set_intr_type(
- vdev->devh,
- VXGE_HW_INTR_MODE_IRQLINE);
- vdev->config.intr_type = INTA;
- vxge_debug_init(VXGE_ERR,
- "%s: Defaulting to INTA"
- , vdev->ndev->name);
- vxge_close_vpaths(vdev, 1);
- vdev->no_of_vpath = 1;
- vdev->stats.vpaths_open = 1;
+ vdev->config.intr_type = INTA;
+ vxge_debug_init(VXGE_ERR,
+ "%s: Defaulting to INTA"
+ , vdev->ndev->name);
goto INTA_MODE;
- }
}
if (irq_req) {
@@ -2555,23 +2530,11 @@ static int vxge_add_isr(struct vxgedev *
"%s: MSIX - %d Registration failed",
vdev->ndev->name, intr_cnt);
vxge_rem_msix_isr(vdev);
- if ((function_mode ==
- VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
- test_and_set_bit(__VXGE_STATE_CARD_UP,
- &driver_config->inta_dev_open))
- return VXGE_HW_FAIL;
- else {
- vxge_hw_device_set_intr_type(vdev->devh,
- VXGE_HW_INTR_MODE_IRQLINE);
- vdev->config.intr_type = INTA;
- vxge_debug_init(VXGE_ERR,
- "%s: Defaulting to INTA",
- vdev->ndev->name);
- vxge_close_vpaths(vdev, 1);
- vdev->no_of_vpath = 1;
- vdev->stats.vpaths_open = 1;
+ vdev->config.intr_type = INTA;
+ vxge_debug_init(VXGE_ERR,
+ "%s: Defaulting to INTA",
+ vdev->ndev->name);
goto INTA_MODE;
- }
}
vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
@@ -2584,6 +2547,10 @@ INTA_MODE:
snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
if (vdev->config.intr_type == INTA) {
+ vxge_hw_device_set_intr_type(vdev->devh,
+ VXGE_HW_INTR_MODE_IRQLINE);
+ vxge_hw_vpath_tti_ci_set(vdev->devh,
+ vdev->vpaths[0].device_id);
ret = request_irq((int) vdev->pdev->irq,
vxge_isr_napi,
IRQF_SHARED, vdev->desc[0], vdev);
@@ -2688,13 +2655,6 @@ vxge_open(struct net_device *dev)
* initialized */
netif_carrier_off(dev);
- /* Check for another device already opn with INTA */
- if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
- test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
- ret = -EPERM;
- goto out0;
- }
-
/* Open VPATHs */
status = vxge_open_vpaths(vdev);
if (status != VXGE_HW_OK) {
@@ -2983,7 +2943,6 @@ int do_vxge_close(struct net_device *dev
vxge_debug_entryexit(VXGE_TRACE,
"%s: %s:%d Exiting...", dev->name, __func__, __LINE__);
- clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
return 0;
@@ -4397,6 +4356,27 @@ vxge_probe(struct pci_dev *pdev, const s
}
kfree(device_config);
+
+ /*
+ * INTA is shared in multi-function mode. This is unlike the INTA
+ * implementation in MR mode, where each VH has its own INTA message.
+ * - INTA is masked (disabled) as long as at least one function sets
+ * its TITAN_MASK_ALL_INT.ALARM bit.
+ * - INTA is unmasked (enabled) when all enabled functions have cleared
+ * their own TITAN_MASK_ALL_INT.ALARM bit.
+ * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
+ * Though this driver leaves the top level interrupts unmasked while
+ * leaving the required module interrupt bits masked on exit, there
+ * could be a rougue driver around that does not follow this procedure
+ * resulting in a failure to generate interrupts. The following code is
+ * present to prevent such a failure.
+ */
+
+ if (ll_config.device_hw_info.function_mode ==
+ VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
+ if (vdev->config.intr_type == INTA)
+ vxge_hw_device_unmask_all(hldev);
+
vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...",
vdev->ndev->name, __func__, __LINE__);
diff -urpN patch6/drivers/net/vxge/vxge-main.h patch7/drivers/net/vxge/vxge-main.h
--- patch6/drivers/net/vxge/vxge-main.h 2009-09-04 01:25:50.000000000 -0700
+++ patch7/drivers/net/vxge/vxge-main.h 2009-09-04 02:05:36.000000000 -0700
@@ -112,7 +112,6 @@ enum vxge_mac_addr_state {
struct vxge_drv_config {
int config_dev_cnt;
int total_dev_cnt;
- unsigned long inta_dev_open;
int g_no_cpus;
unsigned int vpath_per_dev;
};
diff -urpN patch6/drivers/net/vxge/vxge-traffic.c patch7/drivers/net/vxge/vxge-traffic.c
--- patch6/drivers/net/vxge/vxge-traffic.c 2009-09-04 01:25:50.000000000 -0700
+++ patch7/drivers/net/vxge/vxge-traffic.c 2009-09-04 02:06:25.000000000 -0700
@@ -295,6 +295,8 @@ void vxge_hw_device_intr_enable(struct _
u64 val64;
u32 val32;
+ vxge_hw_device_mask_all(hldev);
+
for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
if (!(hldev->vpaths_deployed & vxge_mBIT(i)))
diff -urpN patch6/drivers/net/vxge/vxge-traffic.h patch7/drivers/net/vxge/vxge-traffic.h
--- patch6/drivers/net/vxge/vxge-traffic.h 2009-09-04 01:25:50.000000000 -0700
+++ patch7/drivers/net/vxge/vxge-traffic.h 2009-09-04 02:07:28.000000000 -0700
@@ -2389,6 +2389,8 @@ vxge_hw_channel_dtr_free(struct __vxge_h
int
vxge_hw_channel_dtr_count(struct __vxge_hw_channel *channel);
+void
+vxge_hw_vpath_tti_ci_set(struct __vxge_hw_device *hldev, u32 vp_id);
/* ========================== PRIVATE API ================================= */
^ permalink raw reply
* [net-next-2.6 PATCH 6/9] vxge: Check if FCS stripping is disabled by the firmware.
From: Sreenivasa Honnur @ 2009-10-05 11:56 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Added a function to check if FCS stripping is disabled by the firmware, if
it is not disabled fail driver load.
- By default FCS stripping is disabled by the firmware. With this assumption
driver decrements the indicated packet length by 4 bytes(FCS length).
- This patch ensures that FCS stripping is disabled during driver load time.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch5/drivers/net/vxge/vxge-config.c patch6/drivers/net/vxge/vxge-config.c
--- patch5/drivers/net/vxge/vxge-config.c 2009-09-04 01:24:25.000000000 -0700
+++ patch6/drivers/net/vxge/vxge-config.c 2009-09-04 01:33:43.000000000 -0700
@@ -2157,6 +2157,28 @@ exit:
}
/*
+ * vxge_hw_vpath_strip_fcs_check - Check for FCS strip.
+ */
+enum vxge_hw_status
+vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask)
+{
+ struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg;
+ enum vxge_hw_status status = VXGE_HW_OK;
+ int i = 0, j = 0;
+
+ for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
+ if (!((vpath_mask) & vxge_mBIT(i)))
+ continue;
+ vpmgmt_reg = hldev->vpmgmt_reg[i];
+ for (j = 0; j < VXGE_HW_MAC_MAX_MAC_PORT_ID; j++) {
+ if (readq(&vpmgmt_reg->rxmac_cfg0_port_vpmgmt_clone[j])
+ & VXGE_HW_RXMAC_CFG0_PORT_VPMGMT_CLONE_STRIP_FCS)
+ return VXGE_HW_FAIL;
+ }
+ }
+ return status;
+}
+/*
* vxge_hw_mgmt_reg_Write - Write Titan register.
*/
enum vxge_hw_status
diff -urpN patch5/drivers/net/vxge/vxge-config.h patch6/drivers/net/vxge/vxge-config.h
--- patch5/drivers/net/vxge/vxge-config.h 2009-09-04 01:23:26.000000000 -0700
+++ patch6/drivers/net/vxge/vxge-config.h 2009-09-04 01:29:17.000000000 -0700
@@ -2201,6 +2201,8 @@ __vxge_hw_vpath_func_id_get(
enum vxge_hw_status
__vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath);
+enum vxge_hw_status
+vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask);
/**
* vxge_debug
* @level: level of debug verbosity.
diff -urpN patch5/drivers/net/vxge/vxge-main.c patch6/drivers/net/vxge/vxge-main.c
--- patch5/drivers/net/vxge/vxge-main.c 2009-09-04 01:23:26.000000000 -0700
+++ patch6/drivers/net/vxge/vxge-main.c 2009-09-04 01:31:12.000000000 -0700
@@ -4244,6 +4244,15 @@ vxge_probe(struct pci_dev *pdev, const s
goto _exit3;
}
+ /* if FCS stripping is not disabled in MAC fail driver load */
+ if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
+ vxge_debug_init(VXGE_ERR,
+ "%s: FCS stripping is not disabled in MAC"
+ " failing driver load", VXGE_DRIVER_NAME);
+ ret = -EINVAL;
+ goto _exit4;
+ }
+
vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
/* set private device info */
^ permalink raw reply
* [net-next-2.6 PATCH 5/9] vxge: Removed unused functions.
From: Sreenivasa Honnur @ 2009-10-05 11:55 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Removed the wrr_rebalance function
- This feature is not supported by the ASIC, hence removing the related code.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch4/drivers/net/vxge/vxge-config.c patch5/drivers/net/vxge/vxge-config.c
--- patch4/drivers/net/vxge/vxge-config.c 2009-09-04 01:21:52.000000000 -0700
+++ patch5/drivers/net/vxge/vxge-config.c 2009-09-04 01:24:25.000000000 -0700
@@ -461,209 +461,6 @@ __vxge_hw_verify_pci_e_info(struct __vxg
}
/*
- * vxge_hw_wrr_rebalance - Rebalance the RX_WRR and KDFC_WRR calandars.
- * Rebalance the RX_WRR and KDFC_WRR calandars.
- */
-static enum
-vxge_hw_status vxge_hw_wrr_rebalance(struct __vxge_hw_device *hldev)
-{
- u64 val64;
- u32 wrr_states[VXGE_HW_WEIGHTED_RR_SERVICE_STATES];
- u32 i, j, how_often = 1;
- enum vxge_hw_status status = VXGE_HW_OK;
-
- status = __vxge_hw_device_is_privilaged(hldev->host_type,
- hldev->func_id);
- if (status != VXGE_HW_OK)
- goto exit;
-
- /* Reset the priorities assigned to the WRR arbitration
- phases for the receive traffic */
- for (i = 0; i < VXGE_HW_WRR_RING_COUNT; i++)
- writeq(0, ((&hldev->mrpcim_reg->rx_w_round_robin_0) + i));
-
- /* Reset the transmit FIFO servicing calendar for FIFOs */
- for (i = 0; i < VXGE_HW_WRR_FIFO_COUNT; i++) {
- writeq(0, ((&hldev->mrpcim_reg->kdfc_w_round_robin_0) + i));
- writeq(0, ((&hldev->mrpcim_reg->kdfc_w_round_robin_20) + i));
- }
-
- /* Assign WRR priority 0 for all FIFOs */
- for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
- writeq(VXGE_HW_KDFC_FIFO_0_CTRL_WRR_NUMBER(0),
- ((&hldev->mrpcim_reg->kdfc_fifo_0_ctrl) + i));
-
- writeq(VXGE_HW_KDFC_FIFO_17_CTRL_WRR_NUMBER(0),
- ((&hldev->mrpcim_reg->kdfc_fifo_17_ctrl) + i));
- }
-
- /* Reset to service non-offload doorbells */
- writeq(0, &hldev->mrpcim_reg->kdfc_entry_type_sel_0);
- writeq(0, &hldev->mrpcim_reg->kdfc_entry_type_sel_1);
-
- /* Set priority 0 to all receive queues */
- writeq(0, &hldev->mrpcim_reg->rx_queue_priority_0);
- writeq(0, &hldev->mrpcim_reg->rx_queue_priority_1);
- writeq(0, &hldev->mrpcim_reg->rx_queue_priority_2);
-
- /* Initialize all the slots as unused */
- for (i = 0; i < VXGE_HW_WEIGHTED_RR_SERVICE_STATES; i++)
- wrr_states[i] = -1;
-
- /* Prepare the Fifo service states */
- for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
-
- if (!hldev->config.vp_config[i].min_bandwidth)
- continue;
-
- how_often = VXGE_HW_VPATH_BANDWIDTH_MAX /
- hldev->config.vp_config[i].min_bandwidth;
- if (how_often) {
-
- for (j = 0; j < VXGE_HW_WRR_FIFO_SERVICE_STATES;) {
- if (wrr_states[j] == -1) {
- wrr_states[j] = i;
- /* Make sure each fifo is serviced
- * atleast once */
- if (i == j)
- j += VXGE_HW_MAX_VIRTUAL_PATHS;
- else
- j += how_often;
- } else
- j++;
- }
- }
- }
-
- /* Fill the unused slots with 0 */
- for (j = 0; j < VXGE_HW_WEIGHTED_RR_SERVICE_STATES; j++) {
- if (wrr_states[j] == -1)
- wrr_states[j] = 0;
- }
-
- /* Assign WRR priority number for FIFOs */
- for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
- writeq(VXGE_HW_KDFC_FIFO_0_CTRL_WRR_NUMBER(i),
- ((&hldev->mrpcim_reg->kdfc_fifo_0_ctrl) + i));
-
- writeq(VXGE_HW_KDFC_FIFO_17_CTRL_WRR_NUMBER(i),
- ((&hldev->mrpcim_reg->kdfc_fifo_17_ctrl) + i));
- }
-
- /* Modify the servicing algorithm applied to the 3 types of doorbells.
- i.e, none-offload, message and offload */
- writeq(VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_0(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_1(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_2(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_3(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_4(1) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_5(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_6(0) |
- VXGE_HW_KDFC_ENTRY_TYPE_SEL_0_NUMBER_7(0),
- &hldev->mrpcim_reg->kdfc_entry_type_sel_0);
-
- writeq(VXGE_HW_KDFC_ENTRY_TYPE_SEL_1_NUMBER_8(1),
- &hldev->mrpcim_reg->kdfc_entry_type_sel_1);
-
- for (i = 0, j = 0; i < VXGE_HW_WRR_FIFO_COUNT; i++) {
-
- val64 = VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_0(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_1(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_2(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_3(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_4(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_5(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_6(wrr_states[j++]);
- val64 |= VXGE_HW_KDFC_W_ROUND_ROBIN_0_NUMBER_7(wrr_states[j++]);
-
- writeq(val64, (&hldev->mrpcim_reg->kdfc_w_round_robin_0 + i));
- writeq(val64, (&hldev->mrpcim_reg->kdfc_w_round_robin_20 + i));
- }
-
- /* Set up the priorities assigned to receive queues */
- writeq(VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_0(0) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_1(1) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_2(2) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_3(3) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_4(4) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_5(5) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_6(6) |
- VXGE_HW_RX_QUEUE_PRIORITY_0_RX_Q_NUMBER_7(7),
- &hldev->mrpcim_reg->rx_queue_priority_0);
-
- writeq(VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_8(8) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_9(9) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_10(10) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_11(11) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_12(12) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_13(13) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_14(14) |
- VXGE_HW_RX_QUEUE_PRIORITY_1_RX_Q_NUMBER_15(15),
- &hldev->mrpcim_reg->rx_queue_priority_1);
-
- writeq(VXGE_HW_RX_QUEUE_PRIORITY_2_RX_Q_NUMBER_16(16),
- &hldev->mrpcim_reg->rx_queue_priority_2);
-
- /* Initialize all the slots as unused */
- for (i = 0; i < VXGE_HW_WEIGHTED_RR_SERVICE_STATES; i++)
- wrr_states[i] = -1;
-
- /* Prepare the Ring service states */
- for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
-
- if (!hldev->config.vp_config[i].min_bandwidth)
- continue;
-
- how_often = VXGE_HW_VPATH_BANDWIDTH_MAX /
- hldev->config.vp_config[i].min_bandwidth;
-
- if (how_often) {
- for (j = 0; j < VXGE_HW_WRR_RING_SERVICE_STATES;) {
- if (wrr_states[j] == -1) {
- wrr_states[j] = i;
- /* Make sure each ring is
- * serviced atleast once */
- if (i == j)
- j += VXGE_HW_MAX_VIRTUAL_PATHS;
- else
- j += how_often;
- } else
- j++;
- }
- }
- }
-
- /* Fill the unused slots with 0 */
- for (j = 0; j < VXGE_HW_WEIGHTED_RR_SERVICE_STATES; j++) {
- if (wrr_states[j] == -1)
- wrr_states[j] = 0;
- }
-
- for (i = 0, j = 0; i < VXGE_HW_WRR_RING_COUNT; i++) {
- val64 = VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_0(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_1(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_2(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_3(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_4(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_5(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_6(
- wrr_states[j++]);
- val64 |= VXGE_HW_RX_W_ROUND_ROBIN_0_RX_W_PRIORITY_SS_7(
- wrr_states[j++]);
-
- writeq(val64, ((&hldev->mrpcim_reg->rx_w_round_robin_0) + i));
- }
-exit:
- return status;
-}
-
-/*
* __vxge_hw_device_initialize
* Initialize Titan-V hardware.
*/
@@ -679,7 +476,6 @@ enum vxge_hw_status __vxge_hw_device_ini
goto exit;
}
- vxge_hw_wrr_rebalance(hldev);
exit:
return status;
}
^ permalink raw reply
* [net-next-2.6 PATCH 4/9] vxge: Fixed crash in PAE system due to wrong typecasting.
From: Sreenivasa Honnur @ 2009-10-05 11:54 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Fix a crash in PAE system due to wrong typecasting.
- On PAE system size_t is unsigned int which is 32bit. Avoid casting
64 bit address to 32 bit
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch3/drivers/net/vxge/vxge-traffic.c patch4/drivers/net/vxge/vxge-traffic.c
--- patch3/drivers/net/vxge/vxge-traffic.c 2009-09-04 01:19:23.000000000 -0700
+++ patch4/drivers/net/vxge/vxge-traffic.c 2009-09-04 01:22:35.000000000 -0700
@@ -1232,7 +1232,7 @@ void vxge_hw_fifo_txdl_post(struct __vxg
vxge_hw_channel_dtr_post(&fifo->channel, txdlh);
__vxge_hw_non_offload_db_post(fifo,
- (u64)(size_t)txdl_priv->dma_addr,
+ (u64)txdl_priv->dma_addr,
txdl_priv->frags - 1,
fifo->no_snoop_bits);
^ permalink raw reply
* [net-next-2.6 PATCH 3/9] vxge: Removed accessing non-supported registers.
From: Sreenivasa Honnur @ 2009-10-05 11:53 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Removed accessing GENDMA_INT register
- This allowed the firmware to perform a generic DMA write to host memory.
This feature is not supported by the ASIC, this patch removes access to
GENDMA_INT register.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch2/drivers/net/vxge/vxge-config.c patch3/drivers/net/vxge/vxge-config.c
--- patch2/drivers/net/vxge/vxge-config.c 2009-09-04 01:17:22.000000000 -0700
+++ patch3/drivers/net/vxge/vxge-config.c 2009-09-04 01:19:53.000000000 -0700
@@ -4106,8 +4106,6 @@ __vxge_hw_vpath_initialize(struct __vxge
if (status != VXGE_HW_OK)
goto exit;
- writeq(0, &vp_reg->gendma_int);
-
val64 = readq(&vp_reg->rtdma_rd_optimization_ctrl);
/* Get MRRS value from device control */
diff -urpN patch2/drivers/net/vxge/vxge-reg.h patch3/drivers/net/vxge/vxge-reg.h
--- patch2/drivers/net/vxge/vxge-reg.h 2009-09-04 01:17:22.000000000 -0700
+++ patch3/drivers/net/vxge/vxge-reg.h 2009-09-04 01:20:26.000000000 -0700
@@ -4326,10 +4326,6 @@ struct vxge_hw_vpath_reg {
/*0x011e0*/ u64 umq_bwr_init_byte;
#define VXGE_HW_UMQ_BWR_INIT_BYTE_COUNT(val) vxge_vBIT(val, 0, 32)
/*0x011e8*/ u64 gendma_int;
-#define VXGE_HW_GENDMA_INT_IMMED_ENABLE vxge_mBIT(6)
-#define VXGE_HW_GENDMA_INT_EVENT_ENABLE vxge_mBIT(7)
-#define VXGE_HW_GENDMA_INT_NUMBER(val) vxge_vBIT(val, 9, 7)
-#define VXGE_HW_GENDMA_INT_BITMAP(val) vxge_vBIT(val, 16, 16)
/*0x011f0*/ u64 umqdmq_ir_init_notify;
#define VXGE_HW_UMQDMQ_IR_INIT_NOTIFY_PULSE vxge_mBIT(3)
/*0x011f8*/ u64 dmq_init_notify;
^ permalink raw reply
* [net-next-2.6 PATCH 1/9] vxge: Modify __vxge_hw_device_is_privilaged() to not assume function-0 as the privileged function: Resubmit#1
From: Sreenivasa Honnur @ 2009-10-05 11:51 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- vxge driver was assuming function-0 is always the privilaged function. Now that
restriction has been removed any function can act as a privilaged function.
- This patch modifies the __vxge_hw_device_is_privilaged routine to not assume
function-0 as the privileged function.
- Recreated the patch by incorporating review comments from Dave Miller to
remove double slash in path names.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN orig/drivers/net/vxge/vxge-config.c patch1/drivers/net/vxge/vxge-config.c
--- orig/drivers/net/vxge/vxge-config.c 2009-09-03 22:39:48.000000000 -0700
+++ patch1/drivers/net/vxge/vxge-config.c 2009-09-03 23:11:24.000000000 -0700
@@ -356,10 +356,8 @@ __vxge_hw_device_access_rights_get(u32 h
switch (host_type) {
case VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION:
- if (func_id == 0) {
- access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
- VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
- }
+ access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
+ VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
break;
case VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION:
access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
@@ -382,6 +380,22 @@ __vxge_hw_device_access_rights_get(u32 h
return access_rights;
}
/*
+ * __vxge_hw_device_is_privilaged
+ * This routine checks if the device function is privilaged or not
+ */
+
+enum vxge_hw_status
+__vxge_hw_device_is_privilaged(u32 host_type, u32 func_id)
+{
+ if (__vxge_hw_device_access_rights_get(host_type,
+ func_id) &
+ VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)
+ return VXGE_HW_OK;
+ else
+ return VXGE_HW_ERR_PRIVILAGED_OPEARATION;
+}
+
+/*
* __vxge_hw_device_host_info_get
* This routine returns the host type assignments
*/
@@ -446,18 +460,6 @@ __vxge_hw_verify_pci_e_info(struct __vxg
return VXGE_HW_OK;
}
-enum vxge_hw_status
-__vxge_hw_device_is_privilaged(struct __vxge_hw_device *hldev)
-{
- if ((hldev->host_type == VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION ||
- hldev->host_type == VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION ||
- hldev->host_type == VXGE_HW_NO_MR_SR_VH0_FUNCTION0) &&
- (hldev->func_id == 0))
- return VXGE_HW_OK;
- else
- return VXGE_HW_ERR_PRIVILAGED_OPEARATION;
-}
-
/*
* vxge_hw_wrr_rebalance - Rebalance the RX_WRR and KDFC_WRR calandars.
* Rebalance the RX_WRR and KDFC_WRR calandars.
@@ -470,7 +472,8 @@ vxge_hw_status vxge_hw_wrr_rebalance(str
u32 i, j, how_often = 1;
enum vxge_hw_status status = VXGE_HW_OK;
- status = __vxge_hw_device_is_privilaged(hldev);
+ status = __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id);
if (status != VXGE_HW_OK)
goto exit;
@@ -668,7 +671,8 @@ enum vxge_hw_status __vxge_hw_device_ini
{
enum vxge_hw_status status = VXGE_HW_OK;
- if (VXGE_HW_OK == __vxge_hw_device_is_privilaged(hldev)) {
+ if (VXGE_HW_OK == __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id)) {
/* Validate the pci-e link width and speed */
status = __vxge_hw_verify_pci_e_info(hldev);
if (status != VXGE_HW_OK)
@@ -953,7 +957,8 @@ vxge_hw_mrpcim_stats_access(struct __vxg
u64 val64;
enum vxge_hw_status status = VXGE_HW_OK;
- status = __vxge_hw_device_is_privilaged(hldev);
+ status = __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id);
if (status != VXGE_HW_OK)
goto exit;
@@ -990,7 +995,8 @@ vxge_hw_device_xmac_aggr_stats_get(struc
val64 = (u64 *)aggr_stats;
- status = __vxge_hw_device_is_privilaged(hldev);
+ status = __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id);
if (status != VXGE_HW_OK)
goto exit;
@@ -1023,7 +1029,8 @@ vxge_hw_device_xmac_port_stats_get(struc
u32 offset = 0x0;
val64 = (u64 *) port_stats;
- status = __vxge_hw_device_is_privilaged(hldev);
+ status = __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id);
if (status != VXGE_HW_OK)
goto exit;
@@ -1221,7 +1228,8 @@ enum vxge_hw_status vxge_hw_device_setpa
goto exit;
}
- status = __vxge_hw_device_is_privilaged(hldev);
+ status = __vxge_hw_device_is_privilaged(hldev->host_type,
+ hldev->func_id);
if (status != VXGE_HW_OK)
goto exit;
^ permalink raw reply
* [net-next-2.6 PATCH 2/9] vxge: Update driver_config->vpath_per_dev for each function in probe.
From: Sreenivasa Honnur @ 2009-10-05 11:52 UTC (permalink / raw)
To: davem; +Cc: netdev, support
- Update driver_config->vpath_per_dev for each function in probe.
- vpath_per_device specifies number of vpaths supported for each function/device. The
current code was updating vpath_per_device only for physical device, however this has
to be updated for each function also in case of a MF(Multi function) device.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
---
diff -urpN patch1/drivers/net/vxge/vxge-main.c patch2/drivers/net/vxge/vxge-main.c
--- patch1/drivers/net/vxge/vxge-main.c 2009-09-03 22:40:14.000000000 -0700
+++ patch2/drivers/net/vxge/vxge-main.c 2009-09-04 01:18:13.000000000 -0700
@@ -4088,9 +4088,10 @@ vxge_probe(struct pci_dev *pdev, const s
driver_config->config_dev_cnt = 0;
driver_config->total_dev_cnt = 0;
driver_config->g_no_cpus = 0;
- driver_config->vpath_per_dev = max_config_vpath;
}
+ driver_config->vpath_per_dev = max_config_vpath;
+
driver_config->total_dev_cnt++;
if (++driver_config->config_dev_cnt > max_config_dev) {
ret = 0;
^ permalink raw reply
* Re: [PATCH RFC] isdn/capi: fix up CAPI subsystem workaround locking a bit
From: Tilman Schmidt @ 2009-10-05 11:42 UTC (permalink / raw)
To: Michael Buesch
Cc: Karsten Keil, Carsten Paeth, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
i4ldeveloper-JX7+OpRa80SjiSfgN6Y1Ib39b6g2fGNp,
isdn4linux-JX7+OpRa80SjiSfgN6Y1Ib39b6g2fGNp, Karsten Keil,
Armin Schindler
In-Reply-To: <200910032035.21884.mb-fseUSCV1ubazQB+pC5nmwQ@public.gmane.org>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Sat, 2009-10-03 20:35:19 +0200, Michael Buesch wrote:
>> I remember that handle_minor_send() and/or handle_minor_recv() showed up
>> in the crash backtraces. So if you move them out of the critical
>> section, you can as well remove the lock completely.
>
> here's my original mail:
> http://lkml.indiana.edu/hypermail/linux/kernel/0605.0/0455.html
>
> Note the patch in that mail does _not_ fix the issue, as it turned out later.
> Then I did the workaround-lock patch, which _did_ fix it.
Thanks for the info. So do I understand correctly that after:
commit 6aa65472d18703064898eefb5eb58f7ecd0d8912
Author: Michael Buesch <mb@bu3sch.de>
Date: Mon Jun 26 00:25:30 2006 -0700
[PATCH] CAPI crash / race condition
you were actually still seeing LIST_POISON2 Oopses in
capiminor_del_ack(), but after:
commit 053b47ff249b9e0a634dae807f81465205e7c228
Author: Michael Buesch <mb@bu3sch.de>
Date: Mon Feb 12 00:53:26 2007 -0800
[PATCH] Workaround CAPI subsystem locking issue
they were gone? That's interesting. I'll try to wrap my mind around
this. capiminor_del_ack() isn't that big, after all.
It's unfortunate that these crashes only seem to occur with one specific
device (FritzCard DSL) which I don't have. Can anyone shed some light on
what that device is doing differently from other ISDN cards?
Thanks,
Tilman
- --
Tilman Schmidt E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)
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^ permalink raw reply
* Re: [PATCH] net-next:can: add TI CAN (HECC) driver
From: Wolfgang Grandegger @ 2009-10-05 11:25 UTC (permalink / raw)
To: Anant Gole
Cc: socketcan-core-0fE9KPoRgkgATYTw5x5z8w,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-xIg/pKzrS19vn6HldHNs0ANdhmdF6hFW
In-Reply-To: <1254736974-6685-1-git-send-email-anantgole-l0cyMroinI0@public.gmane.org>
Anant Gole wrote:
> TI HECC (High End CAN Controller) module is found on many TI devices. It
> has 32 hardware mailboxes with full implementation of CAN protocol 2.0B
> with bus speeds up to 1Mbps. Specifications of the module are available
> on TI web <http://www.ti.com>
>
> Signed-off-by: Anant Gole <anantgole-l0cyMroinI0@public.gmane.org>
I already reviewed this driver on the Socketcan-core ML and it's almost
OK from the Socket-CAN point of view. Just one issue...
[snip]
> diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
> new file mode 100644
> index 0000000..9090103
> --- /dev/null
> +++ b/drivers/net/can/ti_hecc.c
[snip]
> +static int ti_hecc_set_btc(struct ti_hecc_priv *priv)
> +{
> + struct can_bittiming *bit_timing = &priv->can.bittiming;
> + u32 can_btc;
> +
> + can_btc = (bit_timing->phase_seg2 - 1) & 0x7;
> + can_btc |= ((bit_timing->phase_seg1 + bit_timing->prop_seg - 1)
> + & 0xF) << 3;
> + if (bit_timing->brp > 4 && priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
> + can_btc |= HECC_CANBTC_SAM;
> + else
> + dev_info(priv->ndev->dev.parent,
> + "WARN: Triple sampling not set due to h/w limitations"
> + " at %d bitrate", bit_timing->bitrate);
That's not correct from my point of view. The warning message should
only be printed when the user tries to set triple sampling. I think it
should be similar to:
if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) {
if (bit_timing->brp > 4)
can_btc |= HECC_CANBTC_SAM;
else
dev_warn(priv->ndev->dev.parent,
"Triple sampling not set due to h/w "
limitations");
}
Apart from that, the patch looks OK.
Wolfgang.
^ permalink raw reply
* Re: [PATCH 0/4][RFC]: coding convention for CCID-struct prefixes
From: Gerrit Renker @ 2009-10-05 11:23 UTC (permalink / raw)
To: David Miller; +Cc: acme, dccp, netdev
In-Reply-To: <20091005.035815.238234647.davem@davemloft.net>
| After Arnaldo takes a look, I can add this as-is to net-next-2.6
This should work, they have been compile/sparse-tested and apply cleanly on net-2.6.
I am waiting for the feedback also in order to rebuild the test tree; and have
informed CCID-4 developers (CCID-4 subtree) about this.
^ permalink raw reply
* [PATCH 2/4][RFC] dccp ccid-3: Overhaul CCID naming convention 2/2
From: Gerrit Renker @ 2009-10-05 10:53 UTC (permalink / raw)
To: acme; +Cc: davem, dccp, netdev, Gerrit Renker
In-Reply-To: <1254739993-5051-2-git-send-email-gerrit@erg.abdn.ac.uk>
This implements the new naming scheme also for CCID-3.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/ccids/ccid3.h | 120 +++++++++---------
net/dccp/ccids/ccid3.c | 321 ++++++++++++++++++++++--------------------------
net/dccp/probe.c | 10 +-
3 files changed, 213 insertions(+), 238 deletions(-)
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -75,44 +75,44 @@ enum ccid3_hc_tx_states {
/**
* struct ccid3_hc_tx_sock - CCID3 sender half-connection socket
- * @ccid3hctx_x - Current sending rate in 64 * bytes per second
- * @ccid3hctx_x_recv - Receive rate in 64 * bytes per second
- * @ccid3hctx_x_calc - Calculated rate in bytes per second
- * @ccid3hctx_rtt - Estimate of current round trip time in usecs
- * @ccid3hctx_p - Current loss event rate (0-1) scaled by 1000000
- * @ccid3hctx_s - Packet size in bytes
- * @ccid3hctx_t_rto - Nofeedback Timer setting in usecs
- * @ccid3hctx_t_ipi - Interpacket (send) interval (RFC 3448, 4.6) in usecs
- * @ccid3hctx_state - Sender state, one of %ccid3_hc_tx_states
- * @ccid3hctx_last_win_count - Last window counter sent
- * @ccid3hctx_t_last_win_count - Timestamp of earliest packet
- * with last_win_count value sent
- * @ccid3hctx_no_feedback_timer - Handle to no feedback timer
- * @ccid3hctx_t_ld - Time last doubled during slow start
- * @ccid3hctx_t_nom - Nominal send time of next packet
- * @ccid3hctx_delta - Send timer delta (RFC 3448, 4.6) in usecs
- * @ccid3hctx_hist - Packet history
- * @ccid3hctx_options_received - Parsed set of retrieved options
+ * @tx_x: Current sending rate in 64 * bytes per second
+ * @tx_x_recv: Receive rate in 64 * bytes per second
+ * @tx_x_calc: Calculated rate in bytes per second
+ * @tx_rtt: Estimate of current round trip time in usecs
+ * @tx_p: Current loss event rate (0-1) scaled by 1000000
+ * @tx_s: Packet size in bytes
+ * @tx_t_rto: Nofeedback Timer setting in usecs
+ * @tx_t_ipi: Interpacket (send) interval (RFC 3448, 4.6) in usecs
+ * @tx_state: Sender state, one of %ccid3_hc_tx_states
+ * @tx_last_win_count: Last window counter sent
+ * @tx_t_last_win_count: Timestamp of earliest packet
+ * with last_win_count value sent
+ * @tx_no_feedback_timer: Handle to no feedback timer
+ * @tx_t_ld: Time last doubled during slow start
+ * @tx_t_nom: Nominal send time of next packet
+ * @tx_delta: Send timer delta (RFC 3448, 4.6) in usecs
+ * @tx_hist: Packet history
+ * @tx_options_received: Parsed set of retrieved options
*/
struct ccid3_hc_tx_sock {
- struct tfrc_tx_info ccid3hctx_tfrc;
-#define ccid3hctx_x ccid3hctx_tfrc.tfrctx_x
-#define ccid3hctx_x_recv ccid3hctx_tfrc.tfrctx_x_recv
-#define ccid3hctx_x_calc ccid3hctx_tfrc.tfrctx_x_calc
-#define ccid3hctx_rtt ccid3hctx_tfrc.tfrctx_rtt
-#define ccid3hctx_p ccid3hctx_tfrc.tfrctx_p
-#define ccid3hctx_t_rto ccid3hctx_tfrc.tfrctx_rto
-#define ccid3hctx_t_ipi ccid3hctx_tfrc.tfrctx_ipi
- u16 ccid3hctx_s;
- enum ccid3_hc_tx_states ccid3hctx_state:8;
- u8 ccid3hctx_last_win_count;
- ktime_t ccid3hctx_t_last_win_count;
- struct timer_list ccid3hctx_no_feedback_timer;
- ktime_t ccid3hctx_t_ld;
- ktime_t ccid3hctx_t_nom;
- u32 ccid3hctx_delta;
- struct tfrc_tx_hist_entry *ccid3hctx_hist;
- struct ccid3_options_received ccid3hctx_options_received;
+ struct tfrc_tx_info tx_tfrc;
+#define tx_x tx_tfrc.tfrctx_x
+#define tx_x_recv tx_tfrc.tfrctx_x_recv
+#define tx_x_calc tx_tfrc.tfrctx_x_calc
+#define tx_rtt tx_tfrc.tfrctx_rtt
+#define tx_p tx_tfrc.tfrctx_p
+#define tx_t_rto tx_tfrc.tfrctx_rto
+#define tx_t_ipi tx_tfrc.tfrctx_ipi
+ u16 tx_s;
+ enum ccid3_hc_tx_states tx_state:8;
+ u8 tx_last_win_count;
+ ktime_t tx_t_last_win_count;
+ struct timer_list tx_no_feedback_timer;
+ ktime_t tx_t_ld;
+ ktime_t tx_t_nom;
+ u32 tx_delta;
+ struct tfrc_tx_hist_entry *tx_hist;
+ struct ccid3_options_received tx_options_received;
};
static inline struct ccid3_hc_tx_sock *ccid3_hc_tx_sk(const struct sock *sk)
@@ -131,32 +131,32 @@ enum ccid3_hc_rx_states {
/**
* struct ccid3_hc_rx_sock - CCID3 receiver half-connection socket
- * @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448 4.3)
- * @ccid3hcrx_rtt - Receiver estimate of rtt (non-standard)
- * @ccid3hcrx_p - Current loss event rate (RFC 3448 5.4)
- * @ccid3hcrx_last_counter - Tracks window counter (RFC 4342, 8.1)
- * @ccid3hcrx_state - Receiver state, one of %ccid3_hc_rx_states
- * @ccid3hcrx_bytes_recv - Total sum of DCCP payload bytes
- * @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448, sec. 4.3)
- * @ccid3hcrx_rtt - Receiver estimate of RTT
- * @ccid3hcrx_tstamp_last_feedback - Time at which last feedback was sent
- * @ccid3hcrx_tstamp_last_ack - Time at which last feedback was sent
- * @ccid3hcrx_hist - Packet history (loss detection + RTT sampling)
- * @ccid3hcrx_li_hist - Loss Interval database
- * @ccid3hcrx_s - Received packet size in bytes
- * @ccid3hcrx_pinv - Inverse of Loss Event Rate (RFC 4342, sec. 8.5)
+ * @rx_x_recv: Receiver estimate of send rate (RFC 3448 4.3)
+ * @rx_rtt: Receiver estimate of rtt (non-standard)
+ * @rx_p: Current loss event rate (RFC 3448 5.4)
+ * @rx_last_counter: Tracks window counter (RFC 4342, 8.1)
+ * @rx_state: Receiver state, one of %ccid3_hc_rx_states
+ * @rx_bytes_recv: Total sum of DCCP payload bytes
+ * @rx_x_recv: Receiver estimate of send rate (RFC 3448, sec. 4.3)
+ * @rx_rtt: Receiver estimate of RTT
+ * @rx_tstamp_last_feedback: Time at which last feedback was sent
+ * @rx_tstamp_last_ack: Time at which last feedback was sent
+ * @rx_hist: Packet history (loss detection + RTT sampling)
+ * @rx_li_hist: Loss Interval database
+ * @rx_s: Received packet size in bytes
+ * @rx_pinv: Inverse of Loss Event Rate (RFC 4342, sec. 8.5)
*/
struct ccid3_hc_rx_sock {
- u8 ccid3hcrx_last_counter:4;
- enum ccid3_hc_rx_states ccid3hcrx_state:8;
- u32 ccid3hcrx_bytes_recv;
- u32 ccid3hcrx_x_recv;
- u32 ccid3hcrx_rtt;
- ktime_t ccid3hcrx_tstamp_last_feedback;
- struct tfrc_rx_hist ccid3hcrx_hist;
- struct tfrc_loss_hist ccid3hcrx_li_hist;
- u16 ccid3hcrx_s;
-#define ccid3hcrx_pinv ccid3hcrx_li_hist.i_mean
+ u8 rx_last_counter:4;
+ enum ccid3_hc_rx_states rx_state:8;
+ u32 rx_bytes_recv;
+ u32 rx_x_recv;
+ u32 rx_rtt;
+ ktime_t rx_tstamp_last_feedback;
+ struct tfrc_rx_hist rx_hist;
+ struct tfrc_loss_hist rx_li_hist;
+ u16 rx_s;
+#define rx_pinv rx_li_hist.i_mean
};
static inline struct ccid3_hc_rx_sock *ccid3_hc_rx_sk(const struct sock *sk)
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -65,13 +65,13 @@ static void ccid3_hc_tx_set_state(struct sock *sk,
enum ccid3_hc_tx_states state)
{
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- enum ccid3_hc_tx_states oldstate = hctx->ccid3hctx_state;
+ enum ccid3_hc_tx_states oldstate = hctx->tx_state;
ccid3_pr_debug("%s(%p) %-8.8s -> %s\n",
dccp_role(sk), sk, ccid3_tx_state_name(oldstate),
ccid3_tx_state_name(state));
WARN_ON(state == oldstate);
- hctx->ccid3hctx_state = state;
+ hctx->tx_state = state;
}
/*
@@ -86,10 +86,9 @@ static void ccid3_hc_tx_set_state(struct sock *sk,
static inline u64 rfc3390_initial_rate(struct sock *sk)
{
const struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- const __u32 w_init = clamp_t(__u32, 4380U,
- 2 * hctx->ccid3hctx_s, 4 * hctx->ccid3hctx_s);
+ const __u32 w_init = clamp_t(__u32, 4380U, 2 * hctx->tx_s, 4 * hctx->tx_s);
- return scaled_div(w_init << 6, hctx->ccid3hctx_rtt);
+ return scaled_div(w_init << 6, hctx->tx_rtt);
}
/*
@@ -98,24 +97,20 @@ static inline u64 rfc3390_initial_rate(struct sock *sk)
static void ccid3_update_send_interval(struct ccid3_hc_tx_sock *hctx)
{
/* Calculate new t_ipi = s / X_inst (X_inst is in 64 * bytes/second) */
- hctx->ccid3hctx_t_ipi = scaled_div32(((u64)hctx->ccid3hctx_s) << 6,
- hctx->ccid3hctx_x);
+ hctx->tx_t_ipi = scaled_div32(((u64)hctx->tx_s) << 6, hctx->tx_x);
/* Calculate new delta by delta = min(t_ipi / 2, t_gran / 2) */
- hctx->ccid3hctx_delta = min_t(u32, hctx->ccid3hctx_t_ipi / 2,
- TFRC_OPSYS_HALF_TIME_GRAN);
-
- ccid3_pr_debug("t_ipi=%u, delta=%u, s=%u, X=%u\n",
- hctx->ccid3hctx_t_ipi, hctx->ccid3hctx_delta,
- hctx->ccid3hctx_s, (unsigned)(hctx->ccid3hctx_x >> 6));
+ hctx->tx_delta = min_t(u32, hctx->tx_t_ipi / 2, TFRC_OPSYS_HALF_TIME_GRAN);
+ ccid3_pr_debug("t_ipi=%u, delta=%u, s=%u, X=%u\n", hctx->tx_t_ipi,
+ hctx->tx_delta, hctx->tx_s, (unsigned)(hctx->tx_x >> 6));
}
static u32 ccid3_hc_tx_idle_rtt(struct ccid3_hc_tx_sock *hctx, ktime_t now)
{
- u32 delta = ktime_us_delta(now, hctx->ccid3hctx_t_last_win_count);
+ u32 delta = ktime_us_delta(now, hctx->tx_t_last_win_count);
- return delta / hctx->ccid3hctx_rtt;
+ return delta / hctx->tx_rtt;
}
/**
@@ -131,8 +126,8 @@ static u32 ccid3_hc_tx_idle_rtt(struct ccid3_hc_tx_sock *hctx, ktime_t now)
static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
{
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- __u64 min_rate = 2 * hctx->ccid3hctx_x_recv;
- const __u64 old_x = hctx->ccid3hctx_x;
+ __u64 min_rate = 2 * hctx->tx_x_recv;
+ const __u64 old_x = hctx->tx_x;
ktime_t now = stamp ? *stamp : ktime_get_real();
/*
@@ -143,33 +138,27 @@ static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
*/
if (ccid3_hc_tx_idle_rtt(hctx, now) >= 2) {
min_rate = rfc3390_initial_rate(sk);
- min_rate = max(min_rate, 2 * hctx->ccid3hctx_x_recv);
+ min_rate = max(min_rate, 2 * hctx->tx_x_recv);
}
- if (hctx->ccid3hctx_p > 0) {
+ if (hctx->tx_p > 0) {
- hctx->ccid3hctx_x = min(((__u64)hctx->ccid3hctx_x_calc) << 6,
- min_rate);
- hctx->ccid3hctx_x = max(hctx->ccid3hctx_x,
- (((__u64)hctx->ccid3hctx_s) << 6) /
- TFRC_T_MBI);
+ hctx->tx_x = min(((__u64)hctx->tx_x_calc) << 6, min_rate);
+ hctx->tx_x = max(hctx->tx_x, (((__u64)hctx->tx_s) << 6) / TFRC_T_MBI);
- } else if (ktime_us_delta(now, hctx->ccid3hctx_t_ld)
- - (s64)hctx->ccid3hctx_rtt >= 0) {
+ } else if (ktime_us_delta(now, hctx->tx_t_ld) - (s64)hctx->tx_rtt >= 0) {
- hctx->ccid3hctx_x = min(2 * hctx->ccid3hctx_x, min_rate);
- hctx->ccid3hctx_x = max(hctx->ccid3hctx_x,
- scaled_div(((__u64)hctx->ccid3hctx_s) << 6,
- hctx->ccid3hctx_rtt));
- hctx->ccid3hctx_t_ld = now;
+ hctx->tx_x = min(2 * hctx->tx_x, min_rate);
+ hctx->tx_x = max(hctx->tx_x, scaled_div(((__u64)hctx->tx_s) << 6,
+ hctx->tx_rtt));
+ hctx->tx_t_ld = now;
}
- if (hctx->ccid3hctx_x != old_x) {
+ if (hctx->tx_x != old_x) {
ccid3_pr_debug("X_prev=%u, X_now=%u, X_calc=%u, "
"X_recv=%u\n", (unsigned)(old_x >> 6),
- (unsigned)(hctx->ccid3hctx_x >> 6),
- hctx->ccid3hctx_x_calc,
- (unsigned)(hctx->ccid3hctx_x_recv >> 6));
+ (unsigned)(hctx->tx_x >> 6), hctx->tx_x_calc,
+ (unsigned)(hctx->tx_x_recv >> 6));
ccid3_update_send_interval(hctx);
}
@@ -181,11 +170,11 @@ static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
*/
static inline void ccid3_hc_tx_update_s(struct ccid3_hc_tx_sock *hctx, int len)
{
- const u16 old_s = hctx->ccid3hctx_s;
+ const u16 old_s = hctx->tx_s;
- hctx->ccid3hctx_s = tfrc_ewma(hctx->ccid3hctx_s, len, 9);
+ hctx->tx_s = tfrc_ewma(hctx->tx_s, len, 9);
- if (hctx->ccid3hctx_s != old_s)
+ if (hctx->tx_s != old_s)
ccid3_update_send_interval(hctx);
}
@@ -196,13 +185,13 @@ static inline void ccid3_hc_tx_update_s(struct ccid3_hc_tx_sock *hctx, int len)
static inline void ccid3_hc_tx_update_win_count(struct ccid3_hc_tx_sock *hctx,
ktime_t now)
{
- u32 delta = ktime_us_delta(now, hctx->ccid3hctx_t_last_win_count),
- quarter_rtts = (4 * delta) / hctx->ccid3hctx_rtt;
+ u32 delta = ktime_us_delta(now, hctx->tx_t_last_win_count),
+ quarter_rtts = (4 * delta) / hctx->tx_rtt;
if (quarter_rtts > 0) {
- hctx->ccid3hctx_t_last_win_count = now;
- hctx->ccid3hctx_last_win_count += min(quarter_rtts, 5U);
- hctx->ccid3hctx_last_win_count &= 0xF; /* mod 16 */
+ hctx->tx_t_last_win_count = now;
+ hctx->tx_last_win_count += min(quarter_rtts, 5U);
+ hctx->tx_last_win_count &= 0xF; /* mod 16 */
}
}
@@ -220,23 +209,22 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
}
ccid3_pr_debug("%s(%p, state=%s) - entry \n", dccp_role(sk), sk,
- ccid3_tx_state_name(hctx->ccid3hctx_state));
+ ccid3_tx_state_name(hctx->tx_state));
- if (hctx->ccid3hctx_state == TFRC_SSTATE_FBACK)
+ if (hctx->tx_state == TFRC_SSTATE_FBACK)
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_NO_FBACK);
- else if (hctx->ccid3hctx_state != TFRC_SSTATE_NO_FBACK)
+ else if (hctx->tx_state != TFRC_SSTATE_NO_FBACK)
goto out;
/*
* Determine new allowed sending rate X as per draft rfc3448bis-00, 4.4
*/
- if (hctx->ccid3hctx_t_rto == 0 || /* no feedback received yet */
- hctx->ccid3hctx_p == 0) {
+ if (hctx->tx_t_rto == 0 || /* no feedback received yet */
+ hctx->tx_p == 0) {
/* halve send rate directly */
- hctx->ccid3hctx_x = max(hctx->ccid3hctx_x / 2,
- (((__u64)hctx->ccid3hctx_s) << 6) /
- TFRC_T_MBI);
+ hctx->tx_x = max(hctx->tx_x / 2,
+ (((__u64)hctx->tx_s) << 6) / TFRC_T_MBI);
ccid3_update_send_interval(hctx);
} else {
/*
@@ -249,33 +237,33 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
*
* Note that X_recv is scaled by 2^6 while X_calc is not
*/
- BUG_ON(hctx->ccid3hctx_p && !hctx->ccid3hctx_x_calc);
+ BUG_ON(hctx->tx_p && !hctx->tx_x_calc);
- if (hctx->ccid3hctx_x_calc > (hctx->ccid3hctx_x_recv >> 5))
- hctx->ccid3hctx_x_recv =
- max(hctx->ccid3hctx_x_recv / 2,
- (((__u64)hctx->ccid3hctx_s) << 6) /
+ if (hctx->tx_x_calc > (hctx->tx_x_recv >> 5))
+ hctx->tx_x_recv =
+ max(hctx->tx_x_recv / 2,
+ (((__u64)hctx->tx_s) << 6) /
(2 * TFRC_T_MBI));
else {
- hctx->ccid3hctx_x_recv = hctx->ccid3hctx_x_calc;
- hctx->ccid3hctx_x_recv <<= 4;
+ hctx->tx_x_recv = hctx->tx_x_calc;
+ hctx->tx_x_recv <<= 4;
}
ccid3_hc_tx_update_x(sk, NULL);
}
ccid3_pr_debug("Reduced X to %llu/64 bytes/sec\n",
- (unsigned long long)hctx->ccid3hctx_x);
+ (unsigned long long)hctx->tx_x);
/*
* Set new timeout for the nofeedback timer.
* See comments in packet_recv() regarding the value of t_RTO.
*/
- if (unlikely(hctx->ccid3hctx_t_rto == 0)) /* no feedback yet */
+ if (unlikely(hctx->tx_t_rto == 0)) /* no feedback yet */
t_nfb = TFRC_INITIAL_TIMEOUT;
else
- t_nfb = max(hctx->ccid3hctx_t_rto, 2 * hctx->ccid3hctx_t_ipi);
+ t_nfb = max(hctx->tx_t_rto, 2 * hctx->tx_t_ipi);
restart_timer:
- sk_reset_timer(sk, &hctx->ccid3hctx_no_feedback_timer,
+ sk_reset_timer(sk, &hctx->tx_no_feedback_timer,
jiffies + usecs_to_jiffies(t_nfb));
out:
bh_unlock_sock(sk);
@@ -303,18 +291,17 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
if (unlikely(skb->len == 0))
return -EBADMSG;
- switch (hctx->ccid3hctx_state) {
+ switch (hctx->tx_state) {
case TFRC_SSTATE_NO_SENT:
- sk_reset_timer(sk, &hctx->ccid3hctx_no_feedback_timer,
- (jiffies +
+ sk_reset_timer(sk, &hctx->tx_no_feedback_timer, (jiffies +
usecs_to_jiffies(TFRC_INITIAL_TIMEOUT)));
- hctx->ccid3hctx_last_win_count = 0;
- hctx->ccid3hctx_t_last_win_count = now;
+ hctx->tx_last_win_count = 0;
+ hctx->tx_t_last_win_count = now;
/* Set t_0 for initial packet */
- hctx->ccid3hctx_t_nom = now;
+ hctx->tx_t_nom = now;
- hctx->ccid3hctx_s = skb->len;
+ hctx->tx_s = skb->len;
/*
* Use initial RTT sample when available: recommended by erratum
@@ -323,9 +310,9 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
*/
if (dp->dccps_syn_rtt) {
ccid3_pr_debug("SYN RTT = %uus\n", dp->dccps_syn_rtt);
- hctx->ccid3hctx_rtt = dp->dccps_syn_rtt;
- hctx->ccid3hctx_x = rfc3390_initial_rate(sk);
- hctx->ccid3hctx_t_ld = now;
+ hctx->tx_rtt = dp->dccps_syn_rtt;
+ hctx->tx_x = rfc3390_initial_rate(sk);
+ hctx->tx_t_ld = now;
} else {
/*
* Sender does not have RTT sample:
@@ -333,9 +320,9 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
* is needed in several parts (e.g. window counter);
* - set sending rate X_pps = 1pps as per RFC 3448, 4.2.
*/
- hctx->ccid3hctx_rtt = DCCP_FALLBACK_RTT;
- hctx->ccid3hctx_x = hctx->ccid3hctx_s;
- hctx->ccid3hctx_x <<= 6;
+ hctx->tx_rtt = DCCP_FALLBACK_RTT;
+ hctx->tx_x = hctx->tx_s;
+ hctx->tx_x <<= 6;
}
ccid3_update_send_interval(hctx);
@@ -343,7 +330,7 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
break;
case TFRC_SSTATE_NO_FBACK:
case TFRC_SSTATE_FBACK:
- delay = ktime_us_delta(hctx->ccid3hctx_t_nom, now);
+ delay = ktime_us_delta(hctx->tx_t_nom, now);
ccid3_pr_debug("delay=%ld\n", (long)delay);
/*
* Scheduling of packet transmissions [RFC 3448, 4.6]
@@ -353,7 +340,7 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
* else
* // send the packet in (t_nom - t_now) milliseconds.
*/
- if (delay - (s64)hctx->ccid3hctx_delta >= 1000)
+ if (delay - (s64)hctx->tx_delta >= 1000)
return (u32)delay / 1000L;
ccid3_hc_tx_update_win_count(hctx, now);
@@ -365,11 +352,10 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
/* prepare to send now (add options etc.) */
dp->dccps_hc_tx_insert_options = 1;
- DCCP_SKB_CB(skb)->dccpd_ccval = hctx->ccid3hctx_last_win_count;
+ DCCP_SKB_CB(skb)->dccpd_ccval = hctx->tx_last_win_count;
/* set the nominal send time for the next following packet */
- hctx->ccid3hctx_t_nom = ktime_add_us(hctx->ccid3hctx_t_nom,
- hctx->ccid3hctx_t_ipi);
+ hctx->tx_t_nom = ktime_add_us(hctx->tx_t_nom, hctx->tx_t_ipi);
return 0;
}
@@ -380,7 +366,7 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more,
ccid3_hc_tx_update_s(hctx, len);
- if (tfrc_tx_hist_add(&hctx->ccid3hctx_hist, dccp_sk(sk)->dccps_gss))
+ if (tfrc_tx_hist_add(&hctx->tx_hist, dccp_sk(sk)->dccps_gss))
DCCP_CRIT("packet history - out of memory!");
}
@@ -397,15 +383,15 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_DATAACK))
return;
/* ... and only in the established state */
- if (hctx->ccid3hctx_state != TFRC_SSTATE_FBACK &&
- hctx->ccid3hctx_state != TFRC_SSTATE_NO_FBACK)
+ if (hctx->tx_state != TFRC_SSTATE_FBACK &&
+ hctx->tx_state != TFRC_SSTATE_NO_FBACK)
return;
- opt_recv = &hctx->ccid3hctx_options_received;
+ opt_recv = &hctx->tx_options_received;
now = ktime_get_real();
/* Estimate RTT from history if ACK number is valid */
- r_sample = tfrc_tx_hist_rtt(hctx->ccid3hctx_hist,
+ r_sample = tfrc_tx_hist_rtt(hctx->tx_hist,
DCCP_SKB_CB(skb)->dccpd_ack_seq, now);
if (r_sample == 0) {
DCCP_WARN("%s(%p): %s with bogus ACK-%llu\n", dccp_role(sk), sk,
@@ -415,37 +401,37 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
/* Update receive rate in units of 64 * bytes/second */
- hctx->ccid3hctx_x_recv = opt_recv->ccid3or_receive_rate;
- hctx->ccid3hctx_x_recv <<= 6;
+ hctx->tx_x_recv = opt_recv->ccid3or_receive_rate;
+ hctx->tx_x_recv <<= 6;
/* Update loss event rate (which is scaled by 1e6) */
pinv = opt_recv->ccid3or_loss_event_rate;
if (pinv == ~0U || pinv == 0) /* see RFC 4342, 8.5 */
- hctx->ccid3hctx_p = 0;
+ hctx->tx_p = 0;
else /* can not exceed 100% */
- hctx->ccid3hctx_p = scaled_div(1, pinv);
+ hctx->tx_p = scaled_div(1, pinv);
/*
* Validate new RTT sample and update moving average
*/
r_sample = dccp_sample_rtt(sk, r_sample);
- hctx->ccid3hctx_rtt = tfrc_ewma(hctx->ccid3hctx_rtt, r_sample, 9);
+ hctx->tx_rtt = tfrc_ewma(hctx->tx_rtt, r_sample, 9);
/*
* Update allowed sending rate X as per draft rfc3448bis-00, 4.2/3
*/
- if (hctx->ccid3hctx_state == TFRC_SSTATE_NO_FBACK) {
+ if (hctx->tx_state == TFRC_SSTATE_NO_FBACK) {
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_FBACK);
- if (hctx->ccid3hctx_t_rto == 0) {
+ if (hctx->tx_t_rto == 0) {
/*
* Initial feedback packet: Larger Initial Windows (4.2)
*/
- hctx->ccid3hctx_x = rfc3390_initial_rate(sk);
- hctx->ccid3hctx_t_ld = now;
+ hctx->tx_x = rfc3390_initial_rate(sk);
+ hctx->tx_t_ld = now;
ccid3_update_send_interval(hctx);
goto done_computing_x;
- } else if (hctx->ccid3hctx_p == 0) {
+ } else if (hctx->tx_p == 0) {
/*
* First feedback after nofeedback timer expiry (4.3)
*/
@@ -454,25 +440,20 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
/* Update sending rate (step 4 of [RFC 3448, 4.3]) */
- if (hctx->ccid3hctx_p > 0)
- hctx->ccid3hctx_x_calc =
- tfrc_calc_x(hctx->ccid3hctx_s,
- hctx->ccid3hctx_rtt,
- hctx->ccid3hctx_p);
+ if (hctx->tx_p > 0)
+ hctx->tx_x_calc = tfrc_calc_x(hctx->tx_s, hctx->tx_rtt, hctx->tx_p);
ccid3_hc_tx_update_x(sk, &now);
done_computing_x:
ccid3_pr_debug("%s(%p), RTT=%uus (sample=%uus), s=%u, "
"p=%u, X_calc=%u, X_recv=%u, X=%u\n",
- dccp_role(sk),
- sk, hctx->ccid3hctx_rtt, r_sample,
- hctx->ccid3hctx_s, hctx->ccid3hctx_p,
- hctx->ccid3hctx_x_calc,
- (unsigned)(hctx->ccid3hctx_x_recv >> 6),
- (unsigned)(hctx->ccid3hctx_x >> 6));
+ dccp_role(sk), sk, hctx->tx_rtt, r_sample,
+ hctx->tx_s, hctx->tx_p, hctx->tx_x_calc,
+ (unsigned)(hctx->tx_x_recv >> 6),
+ (unsigned)(hctx->tx_x >> 6));
/* unschedule no feedback timer */
- sk_stop_timer(sk, &hctx->ccid3hctx_no_feedback_timer);
+ sk_stop_timer(sk, &hctx->tx_no_feedback_timer);
/*
* As we have calculated new ipi, delta, t_nom it is possible
@@ -486,21 +467,19 @@ done_computing_x:
* This can help avoid triggering the nofeedback timer too
* often ('spinning') on LANs with small RTTs.
*/
- hctx->ccid3hctx_t_rto = max_t(u32, 4 * hctx->ccid3hctx_rtt,
- (CONFIG_IP_DCCP_CCID3_RTO *
- (USEC_PER_SEC / 1000)));
+ hctx->tx_t_rto = max_t(u32, 4 * hctx->tx_rtt, (CONFIG_IP_DCCP_CCID3_RTO *
+ (USEC_PER_SEC / 1000)));
/*
* Schedule no feedback timer to expire in
* max(t_RTO, 2 * s/X) = max(t_RTO, 2 * t_ipi)
*/
- t_nfb = max(hctx->ccid3hctx_t_rto, 2 * hctx->ccid3hctx_t_ipi);
+ t_nfb = max(hctx->tx_t_rto, 2 * hctx->tx_t_ipi);
ccid3_pr_debug("%s(%p), Scheduled no feedback timer to "
"expire in %lu jiffies (%luus)\n",
- dccp_role(sk),
- sk, usecs_to_jiffies(t_nfb), t_nfb);
+ dccp_role(sk), sk, usecs_to_jiffies(t_nfb), t_nfb);
- sk_reset_timer(sk, &hctx->ccid3hctx_no_feedback_timer,
+ sk_reset_timer(sk, &hctx->tx_no_feedback_timer,
jiffies + usecs_to_jiffies(t_nfb));
}
@@ -514,7 +493,7 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
struct ccid3_options_received *opt_recv;
__be32 opt_val;
- opt_recv = &hctx->ccid3hctx_options_received;
+ opt_recv = &hctx->tx_options_received;
if (opt_recv->ccid3or_seqno != dp->dccps_gsr) {
opt_recv->ccid3or_seqno = dp->dccps_gsr;
@@ -570,11 +549,10 @@ static int ccid3_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
struct ccid3_hc_tx_sock *hctx = ccid_priv(ccid);
- hctx->ccid3hctx_state = TFRC_SSTATE_NO_SENT;
- hctx->ccid3hctx_hist = NULL;
- setup_timer(&hctx->ccid3hctx_no_feedback_timer,
+ hctx->tx_state = TFRC_SSTATE_NO_SENT;
+ hctx->tx_hist = NULL;
+ setup_timer(&hctx->tx_no_feedback_timer,
ccid3_hc_tx_no_feedback_timer, (unsigned long)sk);
-
return 0;
}
@@ -583,9 +561,9 @@ static void ccid3_hc_tx_exit(struct sock *sk)
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_TERM);
- sk_stop_timer(sk, &hctx->ccid3hctx_no_feedback_timer);
+ sk_stop_timer(sk, &hctx->tx_no_feedback_timer);
- tfrc_tx_hist_purge(&hctx->ccid3hctx_hist);
+ tfrc_tx_hist_purge(&hctx->tx_hist);
}
static void ccid3_hc_tx_get_info(struct sock *sk, struct tcp_info *info)
@@ -597,8 +575,8 @@ static void ccid3_hc_tx_get_info(struct sock *sk, struct tcp_info *info)
return;
hctx = ccid3_hc_tx_sk(sk);
- info->tcpi_rto = hctx->ccid3hctx_t_rto;
- info->tcpi_rtt = hctx->ccid3hctx_rtt;
+ info->tcpi_rto = hctx->tx_t_rto;
+ info->tcpi_rtt = hctx->tx_rtt;
}
static int ccid3_hc_tx_getsockopt(struct sock *sk, const int optname, int len,
@@ -614,10 +592,10 @@ static int ccid3_hc_tx_getsockopt(struct sock *sk, const int optname, int len,
hctx = ccid3_hc_tx_sk(sk);
switch (optname) {
case DCCP_SOCKOPT_CCID_TX_INFO:
- if (len < sizeof(hctx->ccid3hctx_tfrc))
+ if (len < sizeof(hctx->tx_tfrc))
return -EINVAL;
- len = sizeof(hctx->ccid3hctx_tfrc);
- val = &hctx->ccid3hctx_tfrc;
+ len = sizeof(hctx->tx_tfrc);
+ val = &hctx->tx_tfrc;
break;
default:
return -ENOPROTOOPT;
@@ -658,13 +636,13 @@ static void ccid3_hc_rx_set_state(struct sock *sk,
enum ccid3_hc_rx_states state)
{
struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
- enum ccid3_hc_rx_states oldstate = hcrx->ccid3hcrx_state;
+ enum ccid3_hc_rx_states oldstate = hcrx->rx_state;
ccid3_pr_debug("%s(%p) %-8.8s -> %s\n",
dccp_role(sk), sk, ccid3_rx_state_name(oldstate),
ccid3_rx_state_name(state));
WARN_ON(state == oldstate);
- hcrx->ccid3hcrx_state = state;
+ hcrx->rx_state = state;
}
static void ccid3_hc_rx_send_feedback(struct sock *sk,
@@ -676,15 +654,15 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk,
ktime_t now;
s64 delta = 0;
- if (unlikely(hcrx->ccid3hcrx_state == TFRC_RSTATE_TERM))
+ if (unlikely(hcrx->rx_state == TFRC_RSTATE_TERM))
return;
now = ktime_get_real();
switch (fbtype) {
case CCID3_FBACK_INITIAL:
- hcrx->ccid3hcrx_x_recv = 0;
- hcrx->ccid3hcrx_pinv = ~0U; /* see RFC 4342, 8.5 */
+ hcrx->rx_x_recv = 0;
+ hcrx->rx_pinv = ~0U; /* see RFC 4342, 8.5 */
break;
case CCID3_FBACK_PARAM_CHANGE:
/*
@@ -697,27 +675,26 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk,
* the number of bytes since last feedback.
* This is a safe fallback, since X is bounded above by X_calc.
*/
- if (hcrx->ccid3hcrx_x_recv > 0)
+ if (hcrx->rx_x_recv > 0)
break;
/* fall through */
case CCID3_FBACK_PERIODIC:
- delta = ktime_us_delta(now, hcrx->ccid3hcrx_tstamp_last_feedback);
+ delta = ktime_us_delta(now, hcrx->rx_tstamp_last_feedback);
if (delta <= 0)
DCCP_BUG("delta (%ld) <= 0", (long)delta);
else
- hcrx->ccid3hcrx_x_recv =
- scaled_div32(hcrx->ccid3hcrx_bytes_recv, delta);
+ hcrx->rx_x_recv = scaled_div32(hcrx->rx_bytes_recv, delta);
break;
default:
return;
}
ccid3_pr_debug("Interval %ldusec, X_recv=%u, 1/p=%u\n", (long)delta,
- hcrx->ccid3hcrx_x_recv, hcrx->ccid3hcrx_pinv);
+ hcrx->rx_x_recv, hcrx->rx_pinv);
- hcrx->ccid3hcrx_tstamp_last_feedback = now;
- hcrx->ccid3hcrx_last_counter = dccp_hdr(skb)->dccph_ccval;
- hcrx->ccid3hcrx_bytes_recv = 0;
+ hcrx->rx_tstamp_last_feedback = now;
+ hcrx->rx_last_counter = dccp_hdr(skb)->dccph_ccval;
+ hcrx->rx_bytes_recv = 0;
dp->dccps_hc_rx_insert_options = 1;
dccp_send_ack(sk);
@@ -736,8 +713,8 @@ static int ccid3_hc_rx_insert_options(struct sock *sk, struct sk_buff *skb)
if (dccp_packet_without_ack(skb))
return 0;
- x_recv = htonl(hcrx->ccid3hcrx_x_recv);
- pinv = htonl(hcrx->ccid3hcrx_pinv);
+ x_recv = htonl(hcrx->rx_x_recv);
+ pinv = htonl(hcrx->rx_pinv);
if (dccp_insert_option(sk, skb, TFRC_OPT_LOSS_EVENT_RATE,
&pinv, sizeof(pinv)) ||
@@ -764,22 +741,22 @@ static u32 ccid3_first_li(struct sock *sk)
u32 x_recv, p, delta;
u64 fval;
- if (hcrx->ccid3hcrx_rtt == 0) {
+ if (hcrx->rx_rtt == 0) {
DCCP_WARN("No RTT estimate available, using fallback RTT\n");
- hcrx->ccid3hcrx_rtt = DCCP_FALLBACK_RTT;
+ hcrx->rx_rtt = DCCP_FALLBACK_RTT;
}
- delta = ktime_to_us(net_timedelta(hcrx->ccid3hcrx_tstamp_last_feedback));
- x_recv = scaled_div32(hcrx->ccid3hcrx_bytes_recv, delta);
+ delta = ktime_to_us(net_timedelta(hcrx->rx_tstamp_last_feedback));
+ x_recv = scaled_div32(hcrx->rx_bytes_recv, delta);
if (x_recv == 0) { /* would also trigger divide-by-zero */
DCCP_WARN("X_recv==0\n");
- if ((x_recv = hcrx->ccid3hcrx_x_recv) == 0) {
+ if ((x_recv = hcrx->rx_x_recv) == 0) {
DCCP_BUG("stored value of X_recv is zero");
return ~0U;
}
}
- fval = scaled_div(hcrx->ccid3hcrx_s, hcrx->ccid3hcrx_rtt);
+ fval = scaled_div(hcrx->rx_s, hcrx->rx_rtt);
fval = scaled_div32(fval, x_recv);
p = tfrc_calc_x_reverse_lookup(fval);
@@ -796,14 +773,14 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
const u64 ndp = dccp_sk(sk)->dccps_options_received.dccpor_ndp;
const bool is_data_packet = dccp_data_packet(skb);
- if (unlikely(hcrx->ccid3hcrx_state == TFRC_RSTATE_NO_DATA)) {
+ if (unlikely(hcrx->rx_state == TFRC_RSTATE_NO_DATA)) {
if (is_data_packet) {
const u32 payload = skb->len - dccp_hdr(skb)->dccph_doff * 4;
do_feedback = CCID3_FBACK_INITIAL;
ccid3_hc_rx_set_state(sk, TFRC_RSTATE_DATA);
- hcrx->ccid3hcrx_s = payload;
+ hcrx->rx_s = payload;
/*
- * Not necessary to update ccid3hcrx_bytes_recv here,
+ * Not necessary to update rx_bytes_recv here,
* since X_recv = 0 for the first feedback packet (cf.
* RFC 3448, 6.3) -- gerrit
*/
@@ -811,7 +788,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
goto update_records;
}
- if (tfrc_rx_hist_duplicate(&hcrx->ccid3hcrx_hist, skb))
+ if (tfrc_rx_hist_duplicate(&hcrx->rx_hist, skb))
return; /* done receiving */
if (is_data_packet) {
@@ -819,20 +796,20 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
/*
* Update moving-average of s and the sum of received payload bytes
*/
- hcrx->ccid3hcrx_s = tfrc_ewma(hcrx->ccid3hcrx_s, payload, 9);
- hcrx->ccid3hcrx_bytes_recv += payload;
+ hcrx->rx_s = tfrc_ewma(hcrx->rx_s, payload, 9);
+ hcrx->rx_bytes_recv += payload;
}
/*
* Perform loss detection and handle pending losses
*/
- if (tfrc_rx_handle_loss(&hcrx->ccid3hcrx_hist, &hcrx->ccid3hcrx_li_hist,
+ if (tfrc_rx_handle_loss(&hcrx->rx_hist, &hcrx->rx_li_hist,
skb, ndp, ccid3_first_li, sk)) {
do_feedback = CCID3_FBACK_PARAM_CHANGE;
goto done_receiving;
}
- if (tfrc_rx_hist_loss_pending(&hcrx->ccid3hcrx_hist))
+ if (tfrc_rx_hist_loss_pending(&hcrx->rx_hist))
return; /* done receiving */
/*
@@ -841,17 +818,17 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (unlikely(!is_data_packet))
goto update_records;
- if (!tfrc_lh_is_initialised(&hcrx->ccid3hcrx_li_hist)) {
- const u32 sample = tfrc_rx_hist_sample_rtt(&hcrx->ccid3hcrx_hist, skb);
+ if (!tfrc_lh_is_initialised(&hcrx->rx_li_hist)) {
+ const u32 sample = tfrc_rx_hist_sample_rtt(&hcrx->rx_hist, skb);
/*
* Empty loss history: no loss so far, hence p stays 0.
* Sample RTT values, since an RTT estimate is required for the
* computation of p when the first loss occurs; RFC 3448, 6.3.1.
*/
if (sample != 0)
- hcrx->ccid3hcrx_rtt = tfrc_ewma(hcrx->ccid3hcrx_rtt, sample, 9);
+ hcrx->rx_rtt = tfrc_ewma(hcrx->rx_rtt, sample, 9);
- } else if (tfrc_lh_update_i_mean(&hcrx->ccid3hcrx_li_hist, skb)) {
+ } else if (tfrc_lh_update_i_mean(&hcrx->rx_li_hist, skb)) {
/*
* Step (3) of [RFC 3448, 6.1]: Recompute I_mean and, if I_mean
* has decreased (resp. p has increased), send feedback now.
@@ -862,11 +839,11 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
/*
* Check if the periodic once-per-RTT feedback is due; RFC 4342, 10.3
*/
- if (SUB16(dccp_hdr(skb)->dccph_ccval, hcrx->ccid3hcrx_last_counter) > 3)
+ if (SUB16(dccp_hdr(skb)->dccph_ccval, hcrx->rx_last_counter) > 3)
do_feedback = CCID3_FBACK_PERIODIC;
update_records:
- tfrc_rx_hist_add_packet(&hcrx->ccid3hcrx_hist, skb, ndp);
+ tfrc_rx_hist_add_packet(&hcrx->rx_hist, skb, ndp);
done_receiving:
if (do_feedback)
@@ -877,9 +854,9 @@ static int ccid3_hc_rx_init(struct ccid *ccid, struct sock *sk)
{
struct ccid3_hc_rx_sock *hcrx = ccid_priv(ccid);
- hcrx->ccid3hcrx_state = TFRC_RSTATE_NO_DATA;
- tfrc_lh_init(&hcrx->ccid3hcrx_li_hist);
- return tfrc_rx_hist_alloc(&hcrx->ccid3hcrx_hist);
+ hcrx->rx_state = TFRC_RSTATE_NO_DATA;
+ tfrc_lh_init(&hcrx->rx_li_hist);
+ return tfrc_rx_hist_alloc(&hcrx->rx_hist);
}
static void ccid3_hc_rx_exit(struct sock *sk)
@@ -888,8 +865,8 @@ static void ccid3_hc_rx_exit(struct sock *sk)
ccid3_hc_rx_set_state(sk, TFRC_RSTATE_TERM);
- tfrc_rx_hist_purge(&hcrx->ccid3hcrx_hist);
- tfrc_lh_cleanup(&hcrx->ccid3hcrx_li_hist);
+ tfrc_rx_hist_purge(&hcrx->rx_hist);
+ tfrc_lh_cleanup(&hcrx->rx_li_hist);
}
static void ccid3_hc_rx_get_info(struct sock *sk, struct tcp_info *info)
@@ -901,9 +878,9 @@ static void ccid3_hc_rx_get_info(struct sock *sk, struct tcp_info *info)
return;
hcrx = ccid3_hc_rx_sk(sk);
- info->tcpi_ca_state = hcrx->ccid3hcrx_state;
+ info->tcpi_ca_state = hcrx->rx_state;
info->tcpi_options |= TCPI_OPT_TIMESTAMPS;
- info->tcpi_rcv_rtt = hcrx->ccid3hcrx_rtt;
+ info->tcpi_rcv_rtt = hcrx->rx_rtt;
}
static int ccid3_hc_rx_getsockopt(struct sock *sk, const int optname, int len,
@@ -922,10 +899,10 @@ static int ccid3_hc_rx_getsockopt(struct sock *sk, const int optname, int len,
case DCCP_SOCKOPT_CCID_RX_INFO:
if (len < sizeof(rx_info))
return -EINVAL;
- rx_info.tfrcrx_x_recv = hcrx->ccid3hcrx_x_recv;
- rx_info.tfrcrx_rtt = hcrx->ccid3hcrx_rtt;
- rx_info.tfrcrx_p = hcrx->ccid3hcrx_pinv == 0 ? ~0U :
- scaled_div(1, hcrx->ccid3hcrx_pinv);
+ rx_info.tfrcrx_x_recv = hcrx->rx_x_recv;
+ rx_info.tfrcrx_rtt = hcrx->rx_rtt;
+ rx_info.tfrcrx_p = hcrx->rx_pinv == 0 ? ~0U :
+ scaled_div(1, hcrx->rx_pinv);
len = sizeof(rx_info);
val = &rx_info;
break;
--- a/net/dccp/probe.c
+++ b/net/dccp/probe.c
@@ -83,14 +83,12 @@ static int jdccp_sendmsg(struct kiocb *iocb, struct sock *sk,
if (port == 0 || ntohs(inet->dport) == port ||
ntohs(inet->sport) == port) {
if (hctx)
- printl("%pI4:%u %pI4:%u %d %d %d %d %u "
- "%llu %llu %d\n",
+ printl("%pI4:%u %pI4:%u %d %d %d %d %u %llu %llu %d\n",
&inet->saddr, ntohs(inet->sport),
&inet->daddr, ntohs(inet->dport), size,
- hctx->ccid3hctx_s, hctx->ccid3hctx_rtt,
- hctx->ccid3hctx_p, hctx->ccid3hctx_x_calc,
- hctx->ccid3hctx_x_recv >> 6,
- hctx->ccid3hctx_x >> 6, hctx->ccid3hctx_t_ipi);
+ hctx->tx_s, hctx->tx_rtt, hctx->tx_p,
+ hctx->tx_x_calc, hctx->tx_x_recv >> 6,
+ hctx->tx_x >> 6, hctx->tx_t_ipi);
else
printl("%pI4:%u %pI4:%u %d\n",
&inet->saddr, ntohs(inet->sport),
^ permalink raw reply
* [PATCH 4/4][RFC] dccp ccid-3: Remove CCID naming redundancy 2/2
From: Gerrit Renker @ 2009-10-05 10:53 UTC (permalink / raw)
To: acme; +Cc: davem, dccp, netdev, Gerrit Renker
In-Reply-To: <1254739993-5051-4-git-send-email-gerrit@erg.abdn.ac.uk>
This continues the previous patch, by applying the same change to CCID-3.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/ccids/ccid3.c | 371 ++++++++++++++++++++++++------------------------
net/dccp/probe.c | 12 +-
2 files changed, 191 insertions(+), 192 deletions(-)
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -64,14 +64,14 @@ static const char *ccid3_tx_state_name(enum ccid3_hc_tx_states state)
static void ccid3_hc_tx_set_state(struct sock *sk,
enum ccid3_hc_tx_states state)
{
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- enum ccid3_hc_tx_states oldstate = hctx->tx_state;
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
+ enum ccid3_hc_tx_states oldstate = hc->tx_state;
ccid3_pr_debug("%s(%p) %-8.8s -> %s\n",
dccp_role(sk), sk, ccid3_tx_state_name(oldstate),
ccid3_tx_state_name(state));
WARN_ON(state == oldstate);
- hctx->tx_state = state;
+ hc->tx_state = state;
}
/*
@@ -85,32 +85,32 @@ static void ccid3_hc_tx_set_state(struct sock *sk,
*/
static inline u64 rfc3390_initial_rate(struct sock *sk)
{
- const struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- const __u32 w_init = clamp_t(__u32, 4380U, 2 * hctx->tx_s, 4 * hctx->tx_s);
+ const struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
+ const __u32 w_init = clamp_t(__u32, 4380U, 2 * hc->tx_s, 4 * hc->tx_s);
- return scaled_div(w_init << 6, hctx->tx_rtt);
+ return scaled_div(w_init << 6, hc->tx_rtt);
}
/*
* Recalculate t_ipi and delta (should be called whenever X changes)
*/
-static void ccid3_update_send_interval(struct ccid3_hc_tx_sock *hctx)
+static void ccid3_update_send_interval(struct ccid3_hc_tx_sock *hc)
{
/* Calculate new t_ipi = s / X_inst (X_inst is in 64 * bytes/second) */
- hctx->tx_t_ipi = scaled_div32(((u64)hctx->tx_s) << 6, hctx->tx_x);
+ hc->tx_t_ipi = scaled_div32(((u64)hc->tx_s) << 6, hc->tx_x);
/* Calculate new delta by delta = min(t_ipi / 2, t_gran / 2) */
- hctx->tx_delta = min_t(u32, hctx->tx_t_ipi / 2, TFRC_OPSYS_HALF_TIME_GRAN);
+ hc->tx_delta = min_t(u32, hc->tx_t_ipi / 2, TFRC_OPSYS_HALF_TIME_GRAN);
- ccid3_pr_debug("t_ipi=%u, delta=%u, s=%u, X=%u\n", hctx->tx_t_ipi,
- hctx->tx_delta, hctx->tx_s, (unsigned)(hctx->tx_x >> 6));
+ ccid3_pr_debug("t_ipi=%u, delta=%u, s=%u, X=%u\n", hc->tx_t_ipi,
+ hc->tx_delta, hc->tx_s, (unsigned)(hc->tx_x >> 6));
}
-static u32 ccid3_hc_tx_idle_rtt(struct ccid3_hc_tx_sock *hctx, ktime_t now)
+static u32 ccid3_hc_tx_idle_rtt(struct ccid3_hc_tx_sock *hc, ktime_t now)
{
- u32 delta = ktime_us_delta(now, hctx->tx_t_last_win_count);
+ u32 delta = ktime_us_delta(now, hc->tx_t_last_win_count);
- return delta / hctx->tx_rtt;
+ return delta / hc->tx_rtt;
}
/**
@@ -125,9 +125,9 @@ static u32 ccid3_hc_tx_idle_rtt(struct ccid3_hc_tx_sock *hctx, ktime_t now)
*/
static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
{
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
- __u64 min_rate = 2 * hctx->tx_x_recv;
- const __u64 old_x = hctx->tx_x;
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
+ __u64 min_rate = 2 * hc->tx_x_recv;
+ const __u64 old_x = hc->tx_x;
ktime_t now = stamp ? *stamp : ktime_get_real();
/*
@@ -136,31 +136,31 @@ static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
* a sender is idle if it has not sent anything over a 2-RTT-period.
* For consistency with X and X_recv, min_rate is also scaled by 2^6.
*/
- if (ccid3_hc_tx_idle_rtt(hctx, now) >= 2) {
+ if (ccid3_hc_tx_idle_rtt(hc, now) >= 2) {
min_rate = rfc3390_initial_rate(sk);
- min_rate = max(min_rate, 2 * hctx->tx_x_recv);
+ min_rate = max(min_rate, 2 * hc->tx_x_recv);
}
- if (hctx->tx_p > 0) {
+ if (hc->tx_p > 0) {
- hctx->tx_x = min(((__u64)hctx->tx_x_calc) << 6, min_rate);
- hctx->tx_x = max(hctx->tx_x, (((__u64)hctx->tx_s) << 6) / TFRC_T_MBI);
+ hc->tx_x = min(((__u64)hc->tx_x_calc) << 6, min_rate);
+ hc->tx_x = max(hc->tx_x, (((__u64)hc->tx_s) << 6) / TFRC_T_MBI);
- } else if (ktime_us_delta(now, hctx->tx_t_ld) - (s64)hctx->tx_rtt >= 0) {
+ } else if (ktime_us_delta(now, hc->tx_t_ld) - (s64)hc->tx_rtt >= 0) {
- hctx->tx_x = min(2 * hctx->tx_x, min_rate);
- hctx->tx_x = max(hctx->tx_x, scaled_div(((__u64)hctx->tx_s) << 6,
- hctx->tx_rtt));
- hctx->tx_t_ld = now;
+ hc->tx_x = min(2 * hc->tx_x, min_rate);
+ hc->tx_x = max(hc->tx_x,
+ scaled_div(((__u64)hc->tx_s) << 6, hc->tx_rtt));
+ hc->tx_t_ld = now;
}
- if (hctx->tx_x != old_x) {
+ if (hc->tx_x != old_x) {
ccid3_pr_debug("X_prev=%u, X_now=%u, X_calc=%u, "
"X_recv=%u\n", (unsigned)(old_x >> 6),
- (unsigned)(hctx->tx_x >> 6), hctx->tx_x_calc,
- (unsigned)(hctx->tx_x_recv >> 6));
+ (unsigned)(hc->tx_x >> 6), hc->tx_x_calc,
+ (unsigned)(hc->tx_x_recv >> 6));
- ccid3_update_send_interval(hctx);
+ ccid3_update_send_interval(hc);
}
}
@@ -168,37 +168,37 @@ static void ccid3_hc_tx_update_x(struct sock *sk, ktime_t *stamp)
* Track the mean packet size `s' (cf. RFC 4342, 5.3 and RFC 3448, 4.1)
* @len: DCCP packet payload size in bytes
*/
-static inline void ccid3_hc_tx_update_s(struct ccid3_hc_tx_sock *hctx, int len)
+static inline void ccid3_hc_tx_update_s(struct ccid3_hc_tx_sock *hc, int len)
{
- const u16 old_s = hctx->tx_s;
+ const u16 old_s = hc->tx_s;
- hctx->tx_s = tfrc_ewma(hctx->tx_s, len, 9);
+ hc->tx_s = tfrc_ewma(hc->tx_s, len, 9);
- if (hctx->tx_s != old_s)
- ccid3_update_send_interval(hctx);
+ if (hc->tx_s != old_s)
+ ccid3_update_send_interval(hc);
}
/*
* Update Window Counter using the algorithm from [RFC 4342, 8.1].
* As elsewhere, RTT > 0 is assumed by using dccp_sample_rtt().
*/
-static inline void ccid3_hc_tx_update_win_count(struct ccid3_hc_tx_sock *hctx,
+static inline void ccid3_hc_tx_update_win_count(struct ccid3_hc_tx_sock *hc,
ktime_t now)
{
- u32 delta = ktime_us_delta(now, hctx->tx_t_last_win_count),
- quarter_rtts = (4 * delta) / hctx->tx_rtt;
+ u32 delta = ktime_us_delta(now, hc->tx_t_last_win_count),
+ quarter_rtts = (4 * delta) / hc->tx_rtt;
if (quarter_rtts > 0) {
- hctx->tx_t_last_win_count = now;
- hctx->tx_last_win_count += min(quarter_rtts, 5U);
- hctx->tx_last_win_count &= 0xF; /* mod 16 */
+ hc->tx_t_last_win_count = now;
+ hc->tx_last_win_count += min(quarter_rtts, 5U);
+ hc->tx_last_win_count &= 0xF; /* mod 16 */
}
}
static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
{
struct sock *sk = (struct sock *)data;
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
unsigned long t_nfb = USEC_PER_SEC / 5;
bh_lock_sock(sk);
@@ -209,23 +209,23 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
}
ccid3_pr_debug("%s(%p, state=%s) - entry \n", dccp_role(sk), sk,
- ccid3_tx_state_name(hctx->tx_state));
+ ccid3_tx_state_name(hc->tx_state));
- if (hctx->tx_state == TFRC_SSTATE_FBACK)
+ if (hc->tx_state == TFRC_SSTATE_FBACK)
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_NO_FBACK);
- else if (hctx->tx_state != TFRC_SSTATE_NO_FBACK)
+ else if (hc->tx_state != TFRC_SSTATE_NO_FBACK)
goto out;
/*
* Determine new allowed sending rate X as per draft rfc3448bis-00, 4.4
*/
- if (hctx->tx_t_rto == 0 || /* no feedback received yet */
- hctx->tx_p == 0) {
+ if (hc->tx_t_rto == 0 || /* no feedback received yet */
+ hc->tx_p == 0) {
/* halve send rate directly */
- hctx->tx_x = max(hctx->tx_x / 2,
- (((__u64)hctx->tx_s) << 6) / TFRC_T_MBI);
- ccid3_update_send_interval(hctx);
+ hc->tx_x = max(hc->tx_x / 2,
+ (((__u64)hc->tx_s) << 6) / TFRC_T_MBI);
+ ccid3_update_send_interval(hc);
} else {
/*
* Modify the cached value of X_recv
@@ -237,33 +237,32 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
*
* Note that X_recv is scaled by 2^6 while X_calc is not
*/
- BUG_ON(hctx->tx_p && !hctx->tx_x_calc);
+ BUG_ON(hc->tx_p && !hc->tx_x_calc);
- if (hctx->tx_x_calc > (hctx->tx_x_recv >> 5))
- hctx->tx_x_recv =
- max(hctx->tx_x_recv / 2,
- (((__u64)hctx->tx_s) << 6) /
- (2 * TFRC_T_MBI));
+ if (hc->tx_x_calc > (hc->tx_x_recv >> 5))
+ hc->tx_x_recv =
+ max(hc->tx_x_recv / 2,
+ (((__u64)hc->tx_s) << 6) / (2*TFRC_T_MBI));
else {
- hctx->tx_x_recv = hctx->tx_x_calc;
- hctx->tx_x_recv <<= 4;
+ hc->tx_x_recv = hc->tx_x_calc;
+ hc->tx_x_recv <<= 4;
}
ccid3_hc_tx_update_x(sk, NULL);
}
ccid3_pr_debug("Reduced X to %llu/64 bytes/sec\n",
- (unsigned long long)hctx->tx_x);
+ (unsigned long long)hc->tx_x);
/*
* Set new timeout for the nofeedback timer.
* See comments in packet_recv() regarding the value of t_RTO.
*/
- if (unlikely(hctx->tx_t_rto == 0)) /* no feedback yet */
+ if (unlikely(hc->tx_t_rto == 0)) /* no feedback yet */
t_nfb = TFRC_INITIAL_TIMEOUT;
else
- t_nfb = max(hctx->tx_t_rto, 2 * hctx->tx_t_ipi);
+ t_nfb = max(hc->tx_t_rto, 2 * hc->tx_t_ipi);
restart_timer:
- sk_reset_timer(sk, &hctx->tx_no_feedback_timer,
+ sk_reset_timer(sk, &hc->tx_no_feedback_timer,
jiffies + usecs_to_jiffies(t_nfb));
out:
bh_unlock_sock(sk);
@@ -279,7 +278,7 @@ out:
static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
{
struct dccp_sock *dp = dccp_sk(sk);
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
ktime_t now = ktime_get_real();
s64 delay;
@@ -291,17 +290,17 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
if (unlikely(skb->len == 0))
return -EBADMSG;
- switch (hctx->tx_state) {
+ switch (hc->tx_state) {
case TFRC_SSTATE_NO_SENT:
- sk_reset_timer(sk, &hctx->tx_no_feedback_timer, (jiffies +
- usecs_to_jiffies(TFRC_INITIAL_TIMEOUT)));
- hctx->tx_last_win_count = 0;
- hctx->tx_t_last_win_count = now;
+ sk_reset_timer(sk, &hc->tx_no_feedback_timer, (jiffies +
+ usecs_to_jiffies(TFRC_INITIAL_TIMEOUT)));
+ hc->tx_last_win_count = 0;
+ hc->tx_t_last_win_count = now;
/* Set t_0 for initial packet */
- hctx->tx_t_nom = now;
+ hc->tx_t_nom = now;
- hctx->tx_s = skb->len;
+ hc->tx_s = skb->len;
/*
* Use initial RTT sample when available: recommended by erratum
@@ -310,9 +309,9 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
*/
if (dp->dccps_syn_rtt) {
ccid3_pr_debug("SYN RTT = %uus\n", dp->dccps_syn_rtt);
- hctx->tx_rtt = dp->dccps_syn_rtt;
- hctx->tx_x = rfc3390_initial_rate(sk);
- hctx->tx_t_ld = now;
+ hc->tx_rtt = dp->dccps_syn_rtt;
+ hc->tx_x = rfc3390_initial_rate(sk);
+ hc->tx_t_ld = now;
} else {
/*
* Sender does not have RTT sample:
@@ -320,17 +319,17 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
* is needed in several parts (e.g. window counter);
* - set sending rate X_pps = 1pps as per RFC 3448, 4.2.
*/
- hctx->tx_rtt = DCCP_FALLBACK_RTT;
- hctx->tx_x = hctx->tx_s;
- hctx->tx_x <<= 6;
+ hc->tx_rtt = DCCP_FALLBACK_RTT;
+ hc->tx_x = hc->tx_s;
+ hc->tx_x <<= 6;
}
- ccid3_update_send_interval(hctx);
+ ccid3_update_send_interval(hc);
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_NO_FBACK);
break;
case TFRC_SSTATE_NO_FBACK:
case TFRC_SSTATE_FBACK:
- delay = ktime_us_delta(hctx->tx_t_nom, now);
+ delay = ktime_us_delta(hc->tx_t_nom, now);
ccid3_pr_debug("delay=%ld\n", (long)delay);
/*
* Scheduling of packet transmissions [RFC 3448, 4.6]
@@ -340,10 +339,10 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
* else
* // send the packet in (t_nom - t_now) milliseconds.
*/
- if (delay - (s64)hctx->tx_delta >= 1000)
+ if (delay - (s64)hc->tx_delta >= 1000)
return (u32)delay / 1000L;
- ccid3_hc_tx_update_win_count(hctx, now);
+ ccid3_hc_tx_update_win_count(hc, now);
break;
case TFRC_SSTATE_TERM:
DCCP_BUG("%s(%p) - Illegal state TERM", dccp_role(sk), sk);
@@ -352,27 +351,27 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
/* prepare to send now (add options etc.) */
dp->dccps_hc_tx_insert_options = 1;
- DCCP_SKB_CB(skb)->dccpd_ccval = hctx->tx_last_win_count;
+ DCCP_SKB_CB(skb)->dccpd_ccval = hc->tx_last_win_count;
/* set the nominal send time for the next following packet */
- hctx->tx_t_nom = ktime_add_us(hctx->tx_t_nom, hctx->tx_t_ipi);
+ hc->tx_t_nom = ktime_add_us(hc->tx_t_nom, hc->tx_t_ipi);
return 0;
}
static void ccid3_hc_tx_packet_sent(struct sock *sk, int more,
unsigned int len)
{
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
- ccid3_hc_tx_update_s(hctx, len);
+ ccid3_hc_tx_update_s(hc, len);
- if (tfrc_tx_hist_add(&hctx->tx_hist, dccp_sk(sk)->dccps_gss))
+ if (tfrc_tx_hist_add(&hc->tx_hist, dccp_sk(sk)->dccps_gss))
DCCP_CRIT("packet history - out of memory!");
}
static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
struct ccid3_options_received *opt_recv;
ktime_t now;
unsigned long t_nfb;
@@ -383,15 +382,15 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_DATAACK))
return;
/* ... and only in the established state */
- if (hctx->tx_state != TFRC_SSTATE_FBACK &&
- hctx->tx_state != TFRC_SSTATE_NO_FBACK)
+ if (hc->tx_state != TFRC_SSTATE_FBACK &&
+ hc->tx_state != TFRC_SSTATE_NO_FBACK)
return;
- opt_recv = &hctx->tx_options_received;
+ opt_recv = &hc->tx_options_received;
now = ktime_get_real();
/* Estimate RTT from history if ACK number is valid */
- r_sample = tfrc_tx_hist_rtt(hctx->tx_hist,
+ r_sample = tfrc_tx_hist_rtt(hc->tx_hist,
DCCP_SKB_CB(skb)->dccpd_ack_seq, now);
if (r_sample == 0) {
DCCP_WARN("%s(%p): %s with bogus ACK-%llu\n", dccp_role(sk), sk,
@@ -401,37 +400,37 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
/* Update receive rate in units of 64 * bytes/second */
- hctx->tx_x_recv = opt_recv->ccid3or_receive_rate;
- hctx->tx_x_recv <<= 6;
+ hc->tx_x_recv = opt_recv->ccid3or_receive_rate;
+ hc->tx_x_recv <<= 6;
/* Update loss event rate (which is scaled by 1e6) */
pinv = opt_recv->ccid3or_loss_event_rate;
if (pinv == ~0U || pinv == 0) /* see RFC 4342, 8.5 */
- hctx->tx_p = 0;
+ hc->tx_p = 0;
else /* can not exceed 100% */
- hctx->tx_p = scaled_div(1, pinv);
+ hc->tx_p = scaled_div(1, pinv);
/*
* Validate new RTT sample and update moving average
*/
r_sample = dccp_sample_rtt(sk, r_sample);
- hctx->tx_rtt = tfrc_ewma(hctx->tx_rtt, r_sample, 9);
+ hc->tx_rtt = tfrc_ewma(hc->tx_rtt, r_sample, 9);
/*
* Update allowed sending rate X as per draft rfc3448bis-00, 4.2/3
*/
- if (hctx->tx_state == TFRC_SSTATE_NO_FBACK) {
+ if (hc->tx_state == TFRC_SSTATE_NO_FBACK) {
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_FBACK);
- if (hctx->tx_t_rto == 0) {
+ if (hc->tx_t_rto == 0) {
/*
* Initial feedback packet: Larger Initial Windows (4.2)
*/
- hctx->tx_x = rfc3390_initial_rate(sk);
- hctx->tx_t_ld = now;
+ hc->tx_x = rfc3390_initial_rate(sk);
+ hc->tx_t_ld = now;
- ccid3_update_send_interval(hctx);
+ ccid3_update_send_interval(hc);
goto done_computing_x;
- } else if (hctx->tx_p == 0) {
+ } else if (hc->tx_p == 0) {
/*
* First feedback after nofeedback timer expiry (4.3)
*/
@@ -440,20 +439,20 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
/* Update sending rate (step 4 of [RFC 3448, 4.3]) */
- if (hctx->tx_p > 0)
- hctx->tx_x_calc = tfrc_calc_x(hctx->tx_s, hctx->tx_rtt, hctx->tx_p);
+ if (hc->tx_p > 0)
+ hc->tx_x_calc = tfrc_calc_x(hc->tx_s, hc->tx_rtt, hc->tx_p);
ccid3_hc_tx_update_x(sk, &now);
done_computing_x:
ccid3_pr_debug("%s(%p), RTT=%uus (sample=%uus), s=%u, "
"p=%u, X_calc=%u, X_recv=%u, X=%u\n",
- dccp_role(sk), sk, hctx->tx_rtt, r_sample,
- hctx->tx_s, hctx->tx_p, hctx->tx_x_calc,
- (unsigned)(hctx->tx_x_recv >> 6),
- (unsigned)(hctx->tx_x >> 6));
+ dccp_role(sk), sk, hc->tx_rtt, r_sample,
+ hc->tx_s, hc->tx_p, hc->tx_x_calc,
+ (unsigned)(hc->tx_x_recv >> 6),
+ (unsigned)(hc->tx_x >> 6));
/* unschedule no feedback timer */
- sk_stop_timer(sk, &hctx->tx_no_feedback_timer);
+ sk_stop_timer(sk, &hc->tx_no_feedback_timer);
/*
* As we have calculated new ipi, delta, t_nom it is possible
@@ -467,19 +466,19 @@ done_computing_x:
* This can help avoid triggering the nofeedback timer too
* often ('spinning') on LANs with small RTTs.
*/
- hctx->tx_t_rto = max_t(u32, 4 * hctx->tx_rtt, (CONFIG_IP_DCCP_CCID3_RTO *
+ hc->tx_t_rto = max_t(u32, 4 * hc->tx_rtt, (CONFIG_IP_DCCP_CCID3_RTO *
(USEC_PER_SEC / 1000)));
/*
* Schedule no feedback timer to expire in
* max(t_RTO, 2 * s/X) = max(t_RTO, 2 * t_ipi)
*/
- t_nfb = max(hctx->tx_t_rto, 2 * hctx->tx_t_ipi);
+ t_nfb = max(hc->tx_t_rto, 2 * hc->tx_t_ipi);
ccid3_pr_debug("%s(%p), Scheduled no feedback timer to "
"expire in %lu jiffies (%luus)\n",
dccp_role(sk), sk, usecs_to_jiffies(t_nfb), t_nfb);
- sk_reset_timer(sk, &hctx->tx_no_feedback_timer,
+ sk_reset_timer(sk, &hc->tx_no_feedback_timer,
jiffies + usecs_to_jiffies(t_nfb));
}
@@ -489,11 +488,11 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
{
int rc = 0;
const struct dccp_sock *dp = dccp_sk(sk);
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
struct ccid3_options_received *opt_recv;
__be32 opt_val;
- opt_recv = &hctx->tx_options_received;
+ opt_recv = &hc->tx_options_received;
if (opt_recv->ccid3or_seqno != dp->dccps_gsr) {
opt_recv->ccid3or_seqno = dp->dccps_gsr;
@@ -547,55 +546,55 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
static int ccid3_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
- struct ccid3_hc_tx_sock *hctx = ccid_priv(ccid);
+ struct ccid3_hc_tx_sock *hc = ccid_priv(ccid);
- hctx->tx_state = TFRC_SSTATE_NO_SENT;
- hctx->tx_hist = NULL;
- setup_timer(&hctx->tx_no_feedback_timer,
+ hc->tx_state = TFRC_SSTATE_NO_SENT;
+ hc->tx_hist = NULL;
+ setup_timer(&hc->tx_no_feedback_timer,
ccid3_hc_tx_no_feedback_timer, (unsigned long)sk);
return 0;
}
static void ccid3_hc_tx_exit(struct sock *sk)
{
- struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
ccid3_hc_tx_set_state(sk, TFRC_SSTATE_TERM);
- sk_stop_timer(sk, &hctx->tx_no_feedback_timer);
+ sk_stop_timer(sk, &hc->tx_no_feedback_timer);
- tfrc_tx_hist_purge(&hctx->tx_hist);
+ tfrc_tx_hist_purge(&hc->tx_hist);
}
static void ccid3_hc_tx_get_info(struct sock *sk, struct tcp_info *info)
{
- struct ccid3_hc_tx_sock *hctx;
+ struct ccid3_hc_tx_sock *hc;
/* Listen socks doesn't have a private CCID block */
if (sk->sk_state == DCCP_LISTEN)
return;
- hctx = ccid3_hc_tx_sk(sk);
- info->tcpi_rto = hctx->tx_t_rto;
- info->tcpi_rtt = hctx->tx_rtt;
+ hc = ccid3_hc_tx_sk(sk);
+ info->tcpi_rto = hc->tx_t_rto;
+ info->tcpi_rtt = hc->tx_rtt;
}
static int ccid3_hc_tx_getsockopt(struct sock *sk, const int optname, int len,
u32 __user *optval, int __user *optlen)
{
- const struct ccid3_hc_tx_sock *hctx;
+ const struct ccid3_hc_tx_sock *hc;
const void *val;
/* Listen socks doesn't have a private CCID block */
if (sk->sk_state == DCCP_LISTEN)
return -EINVAL;
- hctx = ccid3_hc_tx_sk(sk);
+ hc = ccid3_hc_tx_sk(sk);
switch (optname) {
case DCCP_SOCKOPT_CCID_TX_INFO:
- if (len < sizeof(hctx->tx_tfrc))
+ if (len < sizeof(hc->tx_tfrc))
return -EINVAL;
- len = sizeof(hctx->tx_tfrc);
- val = &hctx->tx_tfrc;
+ len = sizeof(hc->tx_tfrc);
+ val = &hc->tx_tfrc;
break;
default:
return -ENOPROTOOPT;
@@ -635,34 +634,34 @@ static const char *ccid3_rx_state_name(enum ccid3_hc_rx_states state)
static void ccid3_hc_rx_set_state(struct sock *sk,
enum ccid3_hc_rx_states state)
{
- struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
- enum ccid3_hc_rx_states oldstate = hcrx->rx_state;
+ struct ccid3_hc_rx_sock *hc = ccid3_hc_rx_sk(sk);
+ enum ccid3_hc_rx_states oldstate = hc->rx_state;
ccid3_pr_debug("%s(%p) %-8.8s -> %s\n",
dccp_role(sk), sk, ccid3_rx_state_name(oldstate),
ccid3_rx_state_name(state));
WARN_ON(state == oldstate);
- hcrx->rx_state = state;
+ hc->rx_state = state;
}
static void ccid3_hc_rx_send_feedback(struct sock *sk,
const struct sk_buff *skb,
enum ccid3_fback_type fbtype)
{
- struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
+ struct ccid3_hc_rx_sock *hc = ccid3_hc_rx_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
ktime_t now;
s64 delta = 0;
- if (unlikely(hcrx->rx_state == TFRC_RSTATE_TERM))
+ if (unlikely(hc->rx_state == TFRC_RSTATE_TERM))
return;
now = ktime_get_real();
switch (fbtype) {
case CCID3_FBACK_INITIAL:
- hcrx->rx_x_recv = 0;
- hcrx->rx_pinv = ~0U; /* see RFC 4342, 8.5 */
+ hc->rx_x_recv = 0;
+ hc->rx_pinv = ~0U; /* see RFC 4342, 8.5 */
break;
case CCID3_FBACK_PARAM_CHANGE:
/*
@@ -675,26 +674,26 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk,
* the number of bytes since last feedback.
* This is a safe fallback, since X is bounded above by X_calc.
*/
- if (hcrx->rx_x_recv > 0)
+ if (hc->rx_x_recv > 0)
break;
/* fall through */
case CCID3_FBACK_PERIODIC:
- delta = ktime_us_delta(now, hcrx->rx_tstamp_last_feedback);
+ delta = ktime_us_delta(now, hc->rx_tstamp_last_feedback);
if (delta <= 0)
DCCP_BUG("delta (%ld) <= 0", (long)delta);
else
- hcrx->rx_x_recv = scaled_div32(hcrx->rx_bytes_recv, delta);
+ hc->rx_x_recv = scaled_div32(hc->rx_bytes_recv, delta);
break;
default:
return;
}
ccid3_pr_debug("Interval %ldusec, X_recv=%u, 1/p=%u\n", (long)delta,
- hcrx->rx_x_recv, hcrx->rx_pinv);
+ hc->rx_x_recv, hc->rx_pinv);
- hcrx->rx_tstamp_last_feedback = now;
- hcrx->rx_last_counter = dccp_hdr(skb)->dccph_ccval;
- hcrx->rx_bytes_recv = 0;
+ hc->rx_tstamp_last_feedback = now;
+ hc->rx_last_counter = dccp_hdr(skb)->dccph_ccval;
+ hc->rx_bytes_recv = 0;
dp->dccps_hc_rx_insert_options = 1;
dccp_send_ack(sk);
@@ -702,19 +701,19 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk,
static int ccid3_hc_rx_insert_options(struct sock *sk, struct sk_buff *skb)
{
- const struct ccid3_hc_rx_sock *hcrx;
+ const struct ccid3_hc_rx_sock *hc;
__be32 x_recv, pinv;
if (!(sk->sk_state == DCCP_OPEN || sk->sk_state == DCCP_PARTOPEN))
return 0;
- hcrx = ccid3_hc_rx_sk(sk);
+ hc = ccid3_hc_rx_sk(sk);
if (dccp_packet_without_ack(skb))
return 0;
- x_recv = htonl(hcrx->rx_x_recv);
- pinv = htonl(hcrx->rx_pinv);
+ x_recv = htonl(hc->rx_x_recv);
+ pinv = htonl(hc->rx_pinv);
if (dccp_insert_option(sk, skb, TFRC_OPT_LOSS_EVENT_RATE,
&pinv, sizeof(pinv)) ||
@@ -737,26 +736,26 @@ static int ccid3_hc_rx_insert_options(struct sock *sk, struct sk_buff *skb)
*/
static u32 ccid3_first_li(struct sock *sk)
{
- struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
+ struct ccid3_hc_rx_sock *hc = ccid3_hc_rx_sk(sk);
u32 x_recv, p, delta;
u64 fval;
- if (hcrx->rx_rtt == 0) {
+ if (hc->rx_rtt == 0) {
DCCP_WARN("No RTT estimate available, using fallback RTT\n");
- hcrx->rx_rtt = DCCP_FALLBACK_RTT;
+ hc->rx_rtt = DCCP_FALLBACK_RTT;
}
- delta = ktime_to_us(net_timedelta(hcrx->rx_tstamp_last_feedback));
- x_recv = scaled_div32(hcrx->rx_bytes_recv, delta);
+ delta = ktime_to_us(net_timedelta(hc->rx_tstamp_last_feedback));
+ x_recv = scaled_div32(hc->rx_bytes_recv, delta);
if (x_recv == 0) { /* would also trigger divide-by-zero */
DCCP_WARN("X_recv==0\n");
- if ((x_recv = hcrx->rx_x_recv) == 0) {
+ if ((x_recv = hc->rx_x_recv) == 0) {
DCCP_BUG("stored value of X_recv is zero");
return ~0U;
}
}
- fval = scaled_div(hcrx->rx_s, hcrx->rx_rtt);
+ fval = scaled_div(hc->rx_s, hc->rx_rtt);
fval = scaled_div32(fval, x_recv);
p = tfrc_calc_x_reverse_lookup(fval);
@@ -768,17 +767,17 @@ static u32 ccid3_first_li(struct sock *sk)
static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
- struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
+ struct ccid3_hc_rx_sock *hc = ccid3_hc_rx_sk(sk);
enum ccid3_fback_type do_feedback = CCID3_FBACK_NONE;
const u64 ndp = dccp_sk(sk)->dccps_options_received.dccpor_ndp;
const bool is_data_packet = dccp_data_packet(skb);
- if (unlikely(hcrx->rx_state == TFRC_RSTATE_NO_DATA)) {
+ if (unlikely(hc->rx_state == TFRC_RSTATE_NO_DATA)) {
if (is_data_packet) {
const u32 payload = skb->len - dccp_hdr(skb)->dccph_doff * 4;
do_feedback = CCID3_FBACK_INITIAL;
ccid3_hc_rx_set_state(sk, TFRC_RSTATE_DATA);
- hcrx->rx_s = payload;
+ hc->rx_s = payload;
/*
* Not necessary to update rx_bytes_recv here,
* since X_recv = 0 for the first feedback packet (cf.
@@ -788,7 +787,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
goto update_records;
}
- if (tfrc_rx_hist_duplicate(&hcrx->rx_hist, skb))
+ if (tfrc_rx_hist_duplicate(&hc->rx_hist, skb))
return; /* done receiving */
if (is_data_packet) {
@@ -796,20 +795,20 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
/*
* Update moving-average of s and the sum of received payload bytes
*/
- hcrx->rx_s = tfrc_ewma(hcrx->rx_s, payload, 9);
- hcrx->rx_bytes_recv += payload;
+ hc->rx_s = tfrc_ewma(hc->rx_s, payload, 9);
+ hc->rx_bytes_recv += payload;
}
/*
* Perform loss detection and handle pending losses
*/
- if (tfrc_rx_handle_loss(&hcrx->rx_hist, &hcrx->rx_li_hist,
+ if (tfrc_rx_handle_loss(&hc->rx_hist, &hc->rx_li_hist,
skb, ndp, ccid3_first_li, sk)) {
do_feedback = CCID3_FBACK_PARAM_CHANGE;
goto done_receiving;
}
- if (tfrc_rx_hist_loss_pending(&hcrx->rx_hist))
+ if (tfrc_rx_hist_loss_pending(&hc->rx_hist))
return; /* done receiving */
/*
@@ -818,17 +817,17 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (unlikely(!is_data_packet))
goto update_records;
- if (!tfrc_lh_is_initialised(&hcrx->rx_li_hist)) {
- const u32 sample = tfrc_rx_hist_sample_rtt(&hcrx->rx_hist, skb);
+ if (!tfrc_lh_is_initialised(&hc->rx_li_hist)) {
+ const u32 sample = tfrc_rx_hist_sample_rtt(&hc->rx_hist, skb);
/*
* Empty loss history: no loss so far, hence p stays 0.
* Sample RTT values, since an RTT estimate is required for the
* computation of p when the first loss occurs; RFC 3448, 6.3.1.
*/
if (sample != 0)
- hcrx->rx_rtt = tfrc_ewma(hcrx->rx_rtt, sample, 9);
+ hc->rx_rtt = tfrc_ewma(hc->rx_rtt, sample, 9);
- } else if (tfrc_lh_update_i_mean(&hcrx->rx_li_hist, skb)) {
+ } else if (tfrc_lh_update_i_mean(&hc->rx_li_hist, skb)) {
/*
* Step (3) of [RFC 3448, 6.1]: Recompute I_mean and, if I_mean
* has decreased (resp. p has increased), send feedback now.
@@ -839,11 +838,11 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
/*
* Check if the periodic once-per-RTT feedback is due; RFC 4342, 10.3
*/
- if (SUB16(dccp_hdr(skb)->dccph_ccval, hcrx->rx_last_counter) > 3)
+ if (SUB16(dccp_hdr(skb)->dccph_ccval, hc->rx_last_counter) > 3)
do_feedback = CCID3_FBACK_PERIODIC;
update_records:
- tfrc_rx_hist_add_packet(&hcrx->rx_hist, skb, ndp);
+ tfrc_rx_hist_add_packet(&hc->rx_hist, skb, ndp);
done_receiving:
if (do_feedback)
@@ -852,41 +851,41 @@ done_receiving:
static int ccid3_hc_rx_init(struct ccid *ccid, struct sock *sk)
{
- struct ccid3_hc_rx_sock *hcrx = ccid_priv(ccid);
+ struct ccid3_hc_rx_sock *hc = ccid_priv(ccid);
- hcrx->rx_state = TFRC_RSTATE_NO_DATA;
- tfrc_lh_init(&hcrx->rx_li_hist);
- return tfrc_rx_hist_alloc(&hcrx->rx_hist);
+ hc->rx_state = TFRC_RSTATE_NO_DATA;
+ tfrc_lh_init(&hc->rx_li_hist);
+ return tfrc_rx_hist_alloc(&hc->rx_hist);
}
static void ccid3_hc_rx_exit(struct sock *sk)
{
- struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
+ struct ccid3_hc_rx_sock *hc = ccid3_hc_rx_sk(sk);
ccid3_hc_rx_set_state(sk, TFRC_RSTATE_TERM);
- tfrc_rx_hist_purge(&hcrx->rx_hist);
- tfrc_lh_cleanup(&hcrx->rx_li_hist);
+ tfrc_rx_hist_purge(&hc->rx_hist);
+ tfrc_lh_cleanup(&hc->rx_li_hist);
}
static void ccid3_hc_rx_get_info(struct sock *sk, struct tcp_info *info)
{
- const struct ccid3_hc_rx_sock *hcrx;
+ const struct ccid3_hc_rx_sock *hc;
/* Listen socks doesn't have a private CCID block */
if (sk->sk_state == DCCP_LISTEN)
return;
- hcrx = ccid3_hc_rx_sk(sk);
- info->tcpi_ca_state = hcrx->rx_state;
+ hc = ccid3_hc_rx_sk(sk);
+ info->tcpi_ca_state = hc->rx_state;
info->tcpi_options |= TCPI_OPT_TIMESTAMPS;
- info->tcpi_rcv_rtt = hcrx->rx_rtt;
+ info->tcpi_rcv_rtt = hc->rx_rtt;
}
static int ccid3_hc_rx_getsockopt(struct sock *sk, const int optname, int len,
u32 __user *optval, int __user *optlen)
{
- const struct ccid3_hc_rx_sock *hcrx;
+ const struct ccid3_hc_rx_sock *hc;
struct tfrc_rx_info rx_info;
const void *val;
@@ -894,15 +893,15 @@ static int ccid3_hc_rx_getsockopt(struct sock *sk, const int optname, int len,
if (sk->sk_state == DCCP_LISTEN)
return -EINVAL;
- hcrx = ccid3_hc_rx_sk(sk);
+ hc = ccid3_hc_rx_sk(sk);
switch (optname) {
case DCCP_SOCKOPT_CCID_RX_INFO:
if (len < sizeof(rx_info))
return -EINVAL;
- rx_info.tfrcrx_x_recv = hcrx->rx_x_recv;
- rx_info.tfrcrx_rtt = hcrx->rx_rtt;
- rx_info.tfrcrx_p = hcrx->rx_pinv == 0 ? ~0U :
- scaled_div(1, hcrx->rx_pinv);
+ rx_info.tfrcrx_x_recv = hc->rx_x_recv;
+ rx_info.tfrcrx_rtt = hc->rx_rtt;
+ rx_info.tfrcrx_p = hc->rx_pinv == 0 ? ~0U :
+ scaled_div(1, hc->rx_pinv);
len = sizeof(rx_info);
val = &rx_info;
break;
--- a/net/dccp/probe.c
+++ b/net/dccp/probe.c
@@ -75,20 +75,20 @@ static int jdccp_sendmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t size)
{
const struct inet_sock *inet = inet_sk(sk);
- struct ccid3_hc_tx_sock *hctx = NULL;
+ struct ccid3_hc_tx_sock *hc = NULL;
if (ccid_get_current_tx_ccid(dccp_sk(sk)) == DCCPC_CCID3)
- hctx = ccid3_hc_tx_sk(sk);
+ hc = ccid3_hc_tx_sk(sk);
if (port == 0 || ntohs(inet->dport) == port ||
ntohs(inet->sport) == port) {
- if (hctx)
+ if (hc)
printl("%pI4:%u %pI4:%u %d %d %d %d %u %llu %llu %d\n",
&inet->saddr, ntohs(inet->sport),
&inet->daddr, ntohs(inet->dport), size,
- hctx->tx_s, hctx->tx_rtt, hctx->tx_p,
- hctx->tx_x_calc, hctx->tx_x_recv >> 6,
- hctx->tx_x >> 6, hctx->tx_t_ipi);
+ hc->tx_s, hc->tx_rtt, hc->tx_p,
+ hc->tx_x_calc, hc->tx_x_recv >> 6,
+ hc->tx_x >> 6, hc->tx_t_ipi);
else
printl("%pI4:%u %pI4:%u %d\n",
&inet->saddr, ntohs(inet->sport),
--
1.6.0.rc2
^ permalink raw reply
* [PATCH 1/4][RFC] dccp ccid-2: Overhaul CCID naming convention 1/2
From: Gerrit Renker @ 2009-10-05 10:53 UTC (permalink / raw)
To: acme; +Cc: davem, dccp, netdev, Gerrit Renker
In-Reply-To: <1254739993-5051-1-git-send-email-gerrit@erg.abdn.ac.uk>
This patch starts a less problematic naming convention for CCID structs.
The old naming convention used 'hc{tx,rx}->ccid?hc{tx,rx}->...' as
recurring prefixes, which made the code
* hard to write (not easy to fit into 80 characters);
* hard to read (most of the space is occupied by prefixes).
The new naming scheme:
* struct entries for the TX socket are prefixed by 'tx_';
* and those for the RX socket are prefixed by 'rx_'.
The identifiers then remain distinguishable when grep-ing through the tree:
(a) RX/TX sockets are distinguished by the naming scheme,
(b) individual CCIDs are distinguished by filename (ccid{2,3,4}.{c,h}).
This first patch implements the scheme for CCID-2.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/ccids/ccid2.c | 273 ++++++++++++++++++++++++------------------------
net/dccp/ccids/ccid2.h | 46 ++++----
2 files changed, 158 insertions(+), 161 deletions(-)
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -40,34 +40,34 @@ struct ccid2_seq {
/**
* struct ccid2_hc_tx_sock - CCID2 TX half connection
- * @ccid2hctx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5
- * @ccid2hctx_packets_acked - Ack counter for deriving cwnd growth (RFC 3465)
- * @ccid2hctx_lastrtt -time RTT was last measured
- * @ccid2hctx_rpseq - last consecutive seqno
- * @ccid2hctx_rpdupack - dupacks since rpseq
+ * @tx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5
+ * @tx_packets_acked: Ack counter for deriving cwnd growth (RFC 3465)
+ * @tx_lastrtt: time RTT was last measured
+ * @tx_rpseq: last consecutive seqno
+ * @tx_rpdupack: dupacks since rpseq
*/
struct ccid2_hc_tx_sock {
- u32 ccid2hctx_cwnd;
- u32 ccid2hctx_ssthresh;
- u32 ccid2hctx_pipe;
- u32 ccid2hctx_packets_acked;
- struct ccid2_seq *ccid2hctx_seqbuf[CCID2_SEQBUF_MAX];
- int ccid2hctx_seqbufc;
- struct ccid2_seq *ccid2hctx_seqh;
- struct ccid2_seq *ccid2hctx_seqt;
- long ccid2hctx_rto;
- long ccid2hctx_srtt;
- long ccid2hctx_rttvar;
- unsigned long ccid2hctx_lastrtt;
- struct timer_list ccid2hctx_rtotimer;
- u64 ccid2hctx_rpseq;
- int ccid2hctx_rpdupack;
- unsigned long ccid2hctx_last_cong;
- u64 ccid2hctx_high_ack;
+ u32 tx_cwnd;
+ u32 tx_ssthresh;
+ u32 tx_pipe;
+ u32 tx_packets_acked;
+ struct ccid2_seq *tx_seqbuf[CCID2_SEQBUF_MAX];
+ int tx_seqbufc;
+ struct ccid2_seq *tx_seqh;
+ struct ccid2_seq *tx_seqt;
+ long tx_rto;
+ long tx_srtt;
+ long tx_rttvar;
+ unsigned long tx_lastrtt;
+ struct timer_list tx_rtotimer;
+ u64 tx_rpseq;
+ int tx_rpdupack;
+ unsigned long tx_last_cong;
+ u64 tx_high_ack;
};
struct ccid2_hc_rx_sock {
- int ccid2hcrx_data;
+ int rx_data;
};
static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk)
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -37,16 +37,16 @@ static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hctx)
{
int len = 0;
int pipe = 0;
- struct ccid2_seq *seqp = hctx->ccid2hctx_seqh;
+ struct ccid2_seq *seqp = hctx->tx_seqh;
/* there is data in the chain */
- if (seqp != hctx->ccid2hctx_seqt) {
+ if (seqp != hctx->tx_seqt) {
seqp = seqp->ccid2s_prev;
len++;
if (!seqp->ccid2s_acked)
pipe++;
- while (seqp != hctx->ccid2hctx_seqt) {
+ while (seqp != hctx->tx_seqt) {
struct ccid2_seq *prev = seqp->ccid2s_prev;
len++;
@@ -63,16 +63,16 @@ static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hctx)
}
}
- BUG_ON(pipe != hctx->ccid2hctx_pipe);
+ BUG_ON(pipe != hctx->tx_pipe);
ccid2_pr_debug("len of chain=%d\n", len);
do {
seqp = seqp->ccid2s_prev;
len++;
- } while (seqp != hctx->ccid2hctx_seqh);
+ } while (seqp != hctx->tx_seqh);
ccid2_pr_debug("total len=%d\n", len);
- BUG_ON(len != hctx->ccid2hctx_seqbufc * CCID2_SEQBUF_LEN);
+ BUG_ON(len != hctx->tx_seqbufc * CCID2_SEQBUF_LEN);
}
#else
#define ccid2_pr_debug(format, a...)
@@ -85,8 +85,8 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx)
int i;
/* check if we have space to preserve the pointer to the buffer */
- if (hctx->ccid2hctx_seqbufc >= (sizeof(hctx->ccid2hctx_seqbuf) /
- sizeof(struct ccid2_seq*)))
+ if (hctx->tx_seqbufc >= (sizeof(hctx->tx_seqbuf) /
+ sizeof(struct ccid2_seq *)))
return -ENOMEM;
/* allocate buffer and initialize linked list */
@@ -102,20 +102,20 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx)
seqp->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
/* This is the first allocation. Initiate the head and tail. */
- if (hctx->ccid2hctx_seqbufc == 0)
- hctx->ccid2hctx_seqh = hctx->ccid2hctx_seqt = seqp;
+ if (hctx->tx_seqbufc == 0)
+ hctx->tx_seqh = hctx->tx_seqt = seqp;
else {
/* link the existing list with the one we just created */
- hctx->ccid2hctx_seqh->ccid2s_next = seqp;
- seqp->ccid2s_prev = hctx->ccid2hctx_seqh;
+ hctx->tx_seqh->ccid2s_next = seqp;
+ seqp->ccid2s_prev = hctx->tx_seqh;
- hctx->ccid2hctx_seqt->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
- seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = hctx->ccid2hctx_seqt;
+ hctx->tx_seqt->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
+ seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = hctx->tx_seqt;
}
/* store the original pointer to the buffer so we can free it */
- hctx->ccid2hctx_seqbuf[hctx->ccid2hctx_seqbufc] = seqp;
- hctx->ccid2hctx_seqbufc++;
+ hctx->tx_seqbuf[hctx->tx_seqbufc] = seqp;
+ hctx->tx_seqbufc++;
return 0;
}
@@ -124,7 +124,7 @@ static int ccid2_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- if (hctx->ccid2hctx_pipe < hctx->ccid2hctx_cwnd)
+ if (hctx->tx_pipe < hctx->tx_cwnd)
return 0;
return 1; /* XXX CCID should dequeue when ready instead of polling */
@@ -133,7 +133,7 @@ static int ccid2_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val)
{
struct dccp_sock *dp = dccp_sk(sk);
- u32 max_ratio = DIV_ROUND_UP(ccid2_hc_tx_sk(sk)->ccid2hctx_cwnd, 2);
+ u32 max_ratio = DIV_ROUND_UP(ccid2_hc_tx_sk(sk)->tx_cwnd, 2);
/*
* Ensure that Ack Ratio does not exceed ceil(cwnd/2), which is (2) from
@@ -158,7 +158,7 @@ static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val)
static void ccid2_change_srtt(struct ccid2_hc_tx_sock *hctx, long val)
{
ccid2_pr_debug("change SRTT to %ld\n", val);
- hctx->ccid2hctx_srtt = val;
+ hctx->tx_srtt = val;
}
static void ccid2_start_rto_timer(struct sock *sk);
@@ -171,8 +171,7 @@ static void ccid2_hc_tx_rto_expire(unsigned long data)
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {
- sk_reset_timer(sk, &hctx->ccid2hctx_rtotimer,
- jiffies + HZ / 5);
+ sk_reset_timer(sk, &hctx->tx_rtotimer, jiffies + HZ / 5);
goto out;
}
@@ -181,28 +180,28 @@ static void ccid2_hc_tx_rto_expire(unsigned long data)
ccid2_hc_tx_check_sanity(hctx);
/* back-off timer */
- hctx->ccid2hctx_rto <<= 1;
+ hctx->tx_rto <<= 1;
- s = hctx->ccid2hctx_rto / HZ;
+ s = hctx->tx_rto / HZ;
if (s > 60)
- hctx->ccid2hctx_rto = 60 * HZ;
+ hctx->tx_rto = 60 * HZ;
ccid2_start_rto_timer(sk);
/* adjust pipe, cwnd etc */
- hctx->ccid2hctx_ssthresh = hctx->ccid2hctx_cwnd / 2;
- if (hctx->ccid2hctx_ssthresh < 2)
- hctx->ccid2hctx_ssthresh = 2;
- hctx->ccid2hctx_cwnd = 1;
- hctx->ccid2hctx_pipe = 0;
+ hctx->tx_ssthresh = hctx->tx_cwnd / 2;
+ if (hctx->tx_ssthresh < 2)
+ hctx->tx_ssthresh = 2;
+ hctx->tx_cwnd = 1;
+ hctx->tx_pipe = 0;
/* clear state about stuff we sent */
- hctx->ccid2hctx_seqt = hctx->ccid2hctx_seqh;
- hctx->ccid2hctx_packets_acked = 0;
+ hctx->tx_seqt = hctx->tx_seqh;
+ hctx->tx_packets_acked = 0;
/* clear ack ratio state. */
- hctx->ccid2hctx_rpseq = 0;
- hctx->ccid2hctx_rpdupack = -1;
+ hctx->tx_rpseq = 0;
+ hctx->tx_rpdupack = -1;
ccid2_change_l_ack_ratio(sk, 1);
ccid2_hc_tx_check_sanity(hctx);
out:
@@ -214,11 +213,10 @@ static void ccid2_start_rto_timer(struct sock *sk)
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- ccid2_pr_debug("setting RTO timeout=%ld\n", hctx->ccid2hctx_rto);
+ ccid2_pr_debug("setting RTO timeout=%ld\n", hctx->tx_rto);
- BUG_ON(timer_pending(&hctx->ccid2hctx_rtotimer));
- sk_reset_timer(sk, &hctx->ccid2hctx_rtotimer,
- jiffies + hctx->ccid2hctx_rto);
+ BUG_ON(timer_pending(&hctx->tx_rtotimer));
+ sk_reset_timer(sk, &hctx->tx_rtotimer, jiffies + hctx->tx_rto);
}
static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
@@ -227,27 +225,26 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
struct ccid2_seq *next;
- hctx->ccid2hctx_pipe++;
+ hctx->tx_pipe++;
- hctx->ccid2hctx_seqh->ccid2s_seq = dp->dccps_gss;
- hctx->ccid2hctx_seqh->ccid2s_acked = 0;
- hctx->ccid2hctx_seqh->ccid2s_sent = jiffies;
+ hctx->tx_seqh->ccid2s_seq = dp->dccps_gss;
+ hctx->tx_seqh->ccid2s_acked = 0;
+ hctx->tx_seqh->ccid2s_sent = jiffies;
- next = hctx->ccid2hctx_seqh->ccid2s_next;
+ next = hctx->tx_seqh->ccid2s_next;
/* check if we need to alloc more space */
- if (next == hctx->ccid2hctx_seqt) {
+ if (next == hctx->tx_seqt) {
if (ccid2_hc_tx_alloc_seq(hctx)) {
DCCP_CRIT("packet history - out of memory!");
/* FIXME: find a more graceful way to bail out */
return;
}
- next = hctx->ccid2hctx_seqh->ccid2s_next;
- BUG_ON(next == hctx->ccid2hctx_seqt);
+ next = hctx->tx_seqh->ccid2s_next;
+ BUG_ON(next == hctx->tx_seqt);
}
- hctx->ccid2hctx_seqh = next;
+ hctx->tx_seqh = next;
- ccid2_pr_debug("cwnd=%d pipe=%d\n", hctx->ccid2hctx_cwnd,
- hctx->ccid2hctx_pipe);
+ ccid2_pr_debug("cwnd=%d pipe=%d\n", hctx->tx_cwnd, hctx->tx_pipe);
/*
* FIXME: The code below is broken and the variables have been removed
@@ -270,12 +267,12 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
*/
#if 0
/* Ack Ratio. Need to maintain a concept of how many windows we sent */
- hctx->ccid2hctx_arsent++;
+ hctx->tx_arsent++;
/* We had an ack loss in this window... */
- if (hctx->ccid2hctx_ackloss) {
- if (hctx->ccid2hctx_arsent >= hctx->ccid2hctx_cwnd) {
- hctx->ccid2hctx_arsent = 0;
- hctx->ccid2hctx_ackloss = 0;
+ if (hctx->tx_ackloss) {
+ if (hctx->tx_arsent >= hctx->tx_cwnd) {
+ hctx->tx_arsent = 0;
+ hctx->tx_ackloss = 0;
}
} else {
/* No acks lost up to now... */
@@ -285,28 +282,28 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
int denom = dp->dccps_l_ack_ratio * dp->dccps_l_ack_ratio -
dp->dccps_l_ack_ratio;
- denom = hctx->ccid2hctx_cwnd * hctx->ccid2hctx_cwnd / denom;
+ denom = hctx->tx_cwnd * hctx->tx_cwnd / denom;
- if (hctx->ccid2hctx_arsent >= denom) {
+ if (hctx->tx_arsent >= denom) {
ccid2_change_l_ack_ratio(sk, dp->dccps_l_ack_ratio - 1);
- hctx->ccid2hctx_arsent = 0;
+ hctx->tx_arsent = 0;
}
} else {
/* we can't increase ack ratio further [1] */
- hctx->ccid2hctx_arsent = 0; /* or maybe set it to cwnd*/
+ hctx->tx_arsent = 0; /* or maybe set it to cwnd*/
}
}
#endif
/* setup RTO timer */
- if (!timer_pending(&hctx->ccid2hctx_rtotimer))
+ if (!timer_pending(&hctx->tx_rtotimer))
ccid2_start_rto_timer(sk);
#ifdef CONFIG_IP_DCCP_CCID2_DEBUG
do {
- struct ccid2_seq *seqp = hctx->ccid2hctx_seqt;
+ struct ccid2_seq *seqp = hctx->tx_seqt;
- while (seqp != hctx->ccid2hctx_seqh) {
+ while (seqp != hctx->tx_seqh) {
ccid2_pr_debug("out seq=%llu acked=%d time=%lu\n",
(unsigned long long)seqp->ccid2s_seq,
seqp->ccid2s_acked, seqp->ccid2s_sent);
@@ -384,7 +381,7 @@ static void ccid2_hc_tx_kill_rto_timer(struct sock *sk)
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- sk_stop_timer(sk, &hctx->ccid2hctx_rtotimer);
+ sk_stop_timer(sk, &hctx->tx_rtotimer);
ccid2_pr_debug("deleted RTO timer\n");
}
@@ -394,73 +391,73 @@ static inline void ccid2_new_ack(struct sock *sk,
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- if (hctx->ccid2hctx_cwnd < hctx->ccid2hctx_ssthresh) {
- if (*maxincr > 0 && ++hctx->ccid2hctx_packets_acked == 2) {
- hctx->ccid2hctx_cwnd += 1;
- *maxincr -= 1;
- hctx->ccid2hctx_packets_acked = 0;
+ if (hctx->tx_cwnd < hctx->tx_ssthresh) {
+ if (*maxincr > 0 && ++hctx->tx_packets_acked == 2) {
+ hctx->tx_cwnd += 1;
+ *maxincr -= 1;
+ hctx->tx_packets_acked = 0;
}
- } else if (++hctx->ccid2hctx_packets_acked >= hctx->ccid2hctx_cwnd) {
- hctx->ccid2hctx_cwnd += 1;
- hctx->ccid2hctx_packets_acked = 0;
+ } else if (++hctx->tx_packets_acked >= hctx->tx_cwnd) {
+ hctx->tx_cwnd += 1;
+ hctx->tx_packets_acked = 0;
}
/* update RTO */
- if (hctx->ccid2hctx_srtt == -1 ||
- time_after(jiffies, hctx->ccid2hctx_lastrtt + hctx->ccid2hctx_srtt)) {
+ if (hctx->tx_srtt == -1 ||
+ time_after(jiffies, hctx->tx_lastrtt + hctx->tx_srtt)) {
unsigned long r = (long)jiffies - (long)seqp->ccid2s_sent;
int s;
/* first measurement */
- if (hctx->ccid2hctx_srtt == -1) {
+ if (hctx->tx_srtt == -1) {
ccid2_pr_debug("R: %lu Time=%lu seq=%llu\n",
r, jiffies,
(unsigned long long)seqp->ccid2s_seq);
ccid2_change_srtt(hctx, r);
- hctx->ccid2hctx_rttvar = r >> 1;
+ hctx->tx_rttvar = r >> 1;
} else {
/* RTTVAR */
- long tmp = hctx->ccid2hctx_srtt - r;
+ long tmp = hctx->tx_srtt - r;
long srtt;
if (tmp < 0)
tmp *= -1;
tmp >>= 2;
- hctx->ccid2hctx_rttvar *= 3;
- hctx->ccid2hctx_rttvar >>= 2;
- hctx->ccid2hctx_rttvar += tmp;
+ hctx->tx_rttvar *= 3;
+ hctx->tx_rttvar >>= 2;
+ hctx->tx_rttvar += tmp;
/* SRTT */
- srtt = hctx->ccid2hctx_srtt;
+ srtt = hctx->tx_srtt;
srtt *= 7;
srtt >>= 3;
tmp = r >> 3;
srtt += tmp;
ccid2_change_srtt(hctx, srtt);
}
- s = hctx->ccid2hctx_rttvar << 2;
+ s = hctx->tx_rttvar << 2;
/* clock granularity is 1 when based on jiffies */
if (!s)
s = 1;
- hctx->ccid2hctx_rto = hctx->ccid2hctx_srtt + s;
+ hctx->tx_rto = hctx->tx_srtt + s;
/* must be at least a second */
- s = hctx->ccid2hctx_rto / HZ;
+ s = hctx->tx_rto / HZ;
/* DCCP doesn't require this [but I like it cuz my code sux] */
#if 1
if (s < 1)
- hctx->ccid2hctx_rto = HZ;
+ hctx->tx_rto = HZ;
#endif
/* max 60 seconds */
if (s > 60)
- hctx->ccid2hctx_rto = HZ * 60;
+ hctx->tx_rto = HZ * 60;
- hctx->ccid2hctx_lastrtt = jiffies;
+ hctx->tx_lastrtt = jiffies;
ccid2_pr_debug("srtt: %ld rttvar: %ld rto: %ld (HZ=%d) R=%lu\n",
- hctx->ccid2hctx_srtt, hctx->ccid2hctx_rttvar,
- hctx->ccid2hctx_rto, HZ, r);
+ hctx->tx_srtt, hctx->tx_rttvar,
+ hctx->tx_rto, HZ, r);
}
/* we got a new ack, so re-start RTO timer */
@@ -472,12 +469,12 @@ static void ccid2_hc_tx_dec_pipe(struct sock *sk)
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- if (hctx->ccid2hctx_pipe == 0)
+ if (hctx->tx_pipe == 0)
DCCP_BUG("pipe == 0");
else
- hctx->ccid2hctx_pipe--;
+ hctx->tx_pipe--;
- if (hctx->ccid2hctx_pipe == 0)
+ if (hctx->tx_pipe == 0)
ccid2_hc_tx_kill_rto_timer(sk);
}
@@ -485,19 +482,19 @@ static void ccid2_congestion_event(struct sock *sk, struct ccid2_seq *seqp)
{
struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
- if (time_before(seqp->ccid2s_sent, hctx->ccid2hctx_last_cong)) {
+ if (time_before(seqp->ccid2s_sent, hctx->tx_last_cong)) {
ccid2_pr_debug("Multiple losses in an RTT---treating as one\n");
return;
}
- hctx->ccid2hctx_last_cong = jiffies;
+ hctx->tx_last_cong = jiffies;
- hctx->ccid2hctx_cwnd = hctx->ccid2hctx_cwnd / 2 ? : 1U;
- hctx->ccid2hctx_ssthresh = max(hctx->ccid2hctx_cwnd, 2U);
+ hctx->tx_cwnd = hctx->tx_cwnd / 2 ? : 1U;
+ hctx->tx_ssthresh = max(hctx->tx_cwnd, 2U);
/* Avoid spurious timeouts resulting from Ack Ratio > cwnd */
- if (dccp_sk(sk)->dccps_l_ack_ratio > hctx->ccid2hctx_cwnd)
- ccid2_change_l_ack_ratio(sk, hctx->ccid2hctx_cwnd);
+ if (dccp_sk(sk)->dccps_l_ack_ratio > hctx->tx_cwnd)
+ ccid2_change_l_ack_ratio(sk, hctx->tx_cwnd);
}
static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
@@ -521,21 +518,21 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* -sorbo.
*/
/* need to bootstrap */
- if (hctx->ccid2hctx_rpdupack == -1) {
- hctx->ccid2hctx_rpdupack = 0;
- hctx->ccid2hctx_rpseq = seqno;
+ if (hctx->tx_rpdupack == -1) {
+ hctx->tx_rpdupack = 0;
+ hctx->tx_rpseq = seqno;
} else {
/* check if packet is consecutive */
- if (dccp_delta_seqno(hctx->ccid2hctx_rpseq, seqno) == 1)
- hctx->ccid2hctx_rpseq = seqno;
+ if (dccp_delta_seqno(hctx->tx_rpseq, seqno) == 1)
+ hctx->tx_rpseq = seqno;
/* it's a later packet */
- else if (after48(seqno, hctx->ccid2hctx_rpseq)) {
- hctx->ccid2hctx_rpdupack++;
+ else if (after48(seqno, hctx->tx_rpseq)) {
+ hctx->tx_rpdupack++;
/* check if we got enough dupacks */
- if (hctx->ccid2hctx_rpdupack >= NUMDUPACK) {
- hctx->ccid2hctx_rpdupack = -1; /* XXX lame */
- hctx->ccid2hctx_rpseq = 0;
+ if (hctx->tx_rpdupack >= NUMDUPACK) {
+ hctx->tx_rpdupack = -1; /* XXX lame */
+ hctx->tx_rpseq = 0;
ccid2_change_l_ack_ratio(sk, 2 * dp->dccps_l_ack_ratio);
}
@@ -544,7 +541,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* check forward path congestion */
/* still didn't send out new data packets */
- if (hctx->ccid2hctx_seqh == hctx->ccid2hctx_seqt)
+ if (hctx->tx_seqh == hctx->tx_seqt)
return;
switch (DCCP_SKB_CB(skb)->dccpd_type) {
@@ -556,14 +553,14 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
ackno = DCCP_SKB_CB(skb)->dccpd_ack_seq;
- if (after48(ackno, hctx->ccid2hctx_high_ack))
- hctx->ccid2hctx_high_ack = ackno;
+ if (after48(ackno, hctx->tx_high_ack))
+ hctx->tx_high_ack = ackno;
- seqp = hctx->ccid2hctx_seqt;
+ seqp = hctx->tx_seqt;
while (before48(seqp->ccid2s_seq, ackno)) {
seqp = seqp->ccid2s_next;
- if (seqp == hctx->ccid2hctx_seqh) {
- seqp = hctx->ccid2hctx_seqh->ccid2s_prev;
+ if (seqp == hctx->tx_seqh) {
+ seqp = hctx->tx_seqh->ccid2s_prev;
break;
}
}
@@ -573,7 +570,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* packets per acknowledgement. Rounding up avoids that cwnd is not
* advanced when Ack Ratio is 1 and gives a slight edge otherwise.
*/
- if (hctx->ccid2hctx_cwnd < hctx->ccid2hctx_ssthresh)
+ if (hctx->tx_cwnd < hctx->tx_ssthresh)
maxincr = DIV_ROUND_UP(dp->dccps_l_ack_ratio, 2);
/* go through all ack vectors */
@@ -592,7 +589,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* seqnos.
*/
while (after48(seqp->ccid2s_seq, ackno)) {
- if (seqp == hctx->ccid2hctx_seqt) {
+ if (seqp == hctx->tx_seqt) {
done = 1;
break;
}
@@ -624,7 +621,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
(unsigned long long)seqp->ccid2s_seq);
ccid2_hc_tx_dec_pipe(sk);
}
- if (seqp == hctx->ccid2hctx_seqt) {
+ if (seqp == hctx->tx_seqt) {
done = 1;
break;
}
@@ -643,11 +640,11 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* The state about what is acked should be correct now
* Check for NUMDUPACK
*/
- seqp = hctx->ccid2hctx_seqt;
- while (before48(seqp->ccid2s_seq, hctx->ccid2hctx_high_ack)) {
+ seqp = hctx->tx_seqt;
+ while (before48(seqp->ccid2s_seq, hctx->tx_high_ack)) {
seqp = seqp->ccid2s_next;
- if (seqp == hctx->ccid2hctx_seqh) {
- seqp = hctx->ccid2hctx_seqh->ccid2s_prev;
+ if (seqp == hctx->tx_seqh) {
+ seqp = hctx->tx_seqh->ccid2s_prev;
break;
}
}
@@ -658,7 +655,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (done == NUMDUPACK)
break;
}
- if (seqp == hctx->ccid2hctx_seqt)
+ if (seqp == hctx->tx_seqt)
break;
seqp = seqp->ccid2s_prev;
}
@@ -681,20 +678,20 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
ccid2_congestion_event(sk, seqp);
ccid2_hc_tx_dec_pipe(sk);
}
- if (seqp == hctx->ccid2hctx_seqt)
+ if (seqp == hctx->tx_seqt)
break;
seqp = seqp->ccid2s_prev;
}
- hctx->ccid2hctx_seqt = last_acked;
+ hctx->tx_seqt = last_acked;
}
/* trim acked packets in tail */
- while (hctx->ccid2hctx_seqt != hctx->ccid2hctx_seqh) {
- if (!hctx->ccid2hctx_seqt->ccid2s_acked)
+ while (hctx->tx_seqt != hctx->tx_seqh) {
+ if (!hctx->tx_seqt->ccid2s_acked)
break;
- hctx->ccid2hctx_seqt = hctx->ccid2hctx_seqt->ccid2s_next;
+ hctx->tx_seqt = hctx->tx_seqt->ccid2s_next;
}
ccid2_hc_tx_check_sanity(hctx);
@@ -707,17 +704,17 @@ static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
u32 max_ratio;
/* RFC 4341, 5: initialise ssthresh to arbitrarily high (max) value */
- hctx->ccid2hctx_ssthresh = ~0U;
+ hctx->tx_ssthresh = ~0U;
/*
* RFC 4341, 5: "The cwnd parameter is initialized to at most four
* packets for new connections, following the rules from [RFC3390]".
* We need to convert the bytes of RFC3390 into the packets of RFC 4341.
*/
- hctx->ccid2hctx_cwnd = clamp(4380U / dp->dccps_mss_cache, 2U, 4U);
+ hctx->tx_cwnd = clamp(4380U / dp->dccps_mss_cache, 2U, 4U);
/* Make sure that Ack Ratio is enabled and within bounds. */
- max_ratio = DIV_ROUND_UP(hctx->ccid2hctx_cwnd, 2);
+ max_ratio = DIV_ROUND_UP(hctx->tx_cwnd, 2);
if (dp->dccps_l_ack_ratio == 0 || dp->dccps_l_ack_ratio > max_ratio)
dp->dccps_l_ack_ratio = max_ratio;
@@ -725,12 +722,12 @@ static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
if (ccid2_hc_tx_alloc_seq(hctx))
return -ENOMEM;
- hctx->ccid2hctx_rto = 3 * HZ;
+ hctx->tx_rto = 3 * HZ;
ccid2_change_srtt(hctx, -1);
- hctx->ccid2hctx_rttvar = -1;
- hctx->ccid2hctx_rpdupack = -1;
- hctx->ccid2hctx_last_cong = jiffies;
- setup_timer(&hctx->ccid2hctx_rtotimer, ccid2_hc_tx_rto_expire,
+ hctx->tx_rttvar = -1;
+ hctx->tx_rpdupack = -1;
+ hctx->tx_last_cong = jiffies;
+ setup_timer(&hctx->tx_rtotimer, ccid2_hc_tx_rto_expire,
(unsigned long)sk);
ccid2_hc_tx_check_sanity(hctx);
@@ -744,9 +741,9 @@ static void ccid2_hc_tx_exit(struct sock *sk)
ccid2_hc_tx_kill_rto_timer(sk);
- for (i = 0; i < hctx->ccid2hctx_seqbufc; i++)
- kfree(hctx->ccid2hctx_seqbuf[i]);
- hctx->ccid2hctx_seqbufc = 0;
+ for (i = 0; i < hctx->tx_seqbufc; i++)
+ kfree(hctx->tx_seqbuf[i]);
+ hctx->tx_seqbufc = 0;
}
static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
@@ -757,10 +754,10 @@ static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
switch (DCCP_SKB_CB(skb)->dccpd_type) {
case DCCP_PKT_DATA:
case DCCP_PKT_DATAACK:
- hcrx->ccid2hcrx_data++;
- if (hcrx->ccid2hcrx_data >= dp->dccps_r_ack_ratio) {
+ hcrx->rx_data++;
+ if (hcrx->rx_data >= dp->dccps_r_ack_ratio) {
dccp_send_ack(sk);
- hcrx->ccid2hcrx_data = 0;
+ hcrx->rx_data = 0;
}
break;
}
^ permalink raw reply
* [PATCH 3/4][RFC] dccp ccid-2: Remove CCID naming redundancy 1/2
From: Gerrit Renker @ 2009-10-05 10:53 UTC (permalink / raw)
To: acme; +Cc: davem, dccp, netdev, Gerrit Renker
In-Reply-To: <1254739993-5051-3-git-send-email-gerrit@erg.abdn.ac.uk>
This removes a redundancy in the CCID half-connection (hc) naming scheme:
* instead of 'hctx->tx_...', write 'hc->tx_...';
* instead of 'hcrx->rx_...', write 'hc->rx_...';
which works because the 'type' of the half-connection is encoded in the
'rx_' / 'tx_' prefixes.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/ccids/ccid2.c | 322 ++++++++++++++++++++++++------------------------
1 files changed, 161 insertions(+), 161 deletions(-)
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -33,20 +33,20 @@
static int ccid2_debug;
#define ccid2_pr_debug(format, a...) DCCP_PR_DEBUG(ccid2_debug, format, ##a)
-static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hctx)
+static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hc)
{
int len = 0;
int pipe = 0;
- struct ccid2_seq *seqp = hctx->tx_seqh;
+ struct ccid2_seq *seqp = hc->tx_seqh;
/* there is data in the chain */
- if (seqp != hctx->tx_seqt) {
+ if (seqp != hc->tx_seqt) {
seqp = seqp->ccid2s_prev;
len++;
if (!seqp->ccid2s_acked)
pipe++;
- while (seqp != hctx->tx_seqt) {
+ while (seqp != hc->tx_seqt) {
struct ccid2_seq *prev = seqp->ccid2s_prev;
len++;
@@ -63,30 +63,30 @@ static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hctx)
}
}
- BUG_ON(pipe != hctx->tx_pipe);
+ BUG_ON(pipe != hc->tx_pipe);
ccid2_pr_debug("len of chain=%d\n", len);
do {
seqp = seqp->ccid2s_prev;
len++;
- } while (seqp != hctx->tx_seqh);
+ } while (seqp != hc->tx_seqh);
ccid2_pr_debug("total len=%d\n", len);
- BUG_ON(len != hctx->tx_seqbufc * CCID2_SEQBUF_LEN);
+ BUG_ON(len != hc->tx_seqbufc * CCID2_SEQBUF_LEN);
}
#else
#define ccid2_pr_debug(format, a...)
-#define ccid2_hc_tx_check_sanity(hctx)
+#define ccid2_hc_tx_check_sanity(hc)
#endif
-static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx)
+static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hc)
{
struct ccid2_seq *seqp;
int i;
/* check if we have space to preserve the pointer to the buffer */
- if (hctx->tx_seqbufc >= (sizeof(hctx->tx_seqbuf) /
- sizeof(struct ccid2_seq *)))
+ if (hc->tx_seqbufc >= (sizeof(hc->tx_seqbuf) /
+ sizeof(struct ccid2_seq *)))
return -ENOMEM;
/* allocate buffer and initialize linked list */
@@ -102,29 +102,29 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx)
seqp->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
/* This is the first allocation. Initiate the head and tail. */
- if (hctx->tx_seqbufc == 0)
- hctx->tx_seqh = hctx->tx_seqt = seqp;
+ if (hc->tx_seqbufc == 0)
+ hc->tx_seqh = hc->tx_seqt = seqp;
else {
/* link the existing list with the one we just created */
- hctx->tx_seqh->ccid2s_next = seqp;
- seqp->ccid2s_prev = hctx->tx_seqh;
+ hc->tx_seqh->ccid2s_next = seqp;
+ seqp->ccid2s_prev = hc->tx_seqh;
- hctx->tx_seqt->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
- seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = hctx->tx_seqt;
+ hc->tx_seqt->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1];
+ seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = hc->tx_seqt;
}
/* store the original pointer to the buffer so we can free it */
- hctx->tx_seqbuf[hctx->tx_seqbufc] = seqp;
- hctx->tx_seqbufc++;
+ hc->tx_seqbuf[hc->tx_seqbufc] = seqp;
+ hc->tx_seqbufc++;
return 0;
}
static int ccid2_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- if (hctx->tx_pipe < hctx->tx_cwnd)
+ if (hc->tx_pipe < hc->tx_cwnd)
return 0;
return 1; /* XXX CCID should dequeue when ready instead of polling */
@@ -155,10 +155,10 @@ static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val)
dp->dccps_l_ack_ratio = val;
}
-static void ccid2_change_srtt(struct ccid2_hc_tx_sock *hctx, long val)
+static void ccid2_change_srtt(struct ccid2_hc_tx_sock *hc, long val)
{
ccid2_pr_debug("change SRTT to %ld\n", val);
- hctx->tx_srtt = val;
+ hc->tx_srtt = val;
}
static void ccid2_start_rto_timer(struct sock *sk);
@@ -166,44 +166,44 @@ static void ccid2_start_rto_timer(struct sock *sk);
static void ccid2_hc_tx_rto_expire(unsigned long data)
{
struct sock *sk = (struct sock *)data;
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
long s;
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {
- sk_reset_timer(sk, &hctx->tx_rtotimer, jiffies + HZ / 5);
+ sk_reset_timer(sk, &hc->tx_rtotimer, jiffies + HZ / 5);
goto out;
}
ccid2_pr_debug("RTO_EXPIRE\n");
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
/* back-off timer */
- hctx->tx_rto <<= 1;
+ hc->tx_rto <<= 1;
- s = hctx->tx_rto / HZ;
+ s = hc->tx_rto / HZ;
if (s > 60)
- hctx->tx_rto = 60 * HZ;
+ hc->tx_rto = 60 * HZ;
ccid2_start_rto_timer(sk);
/* adjust pipe, cwnd etc */
- hctx->tx_ssthresh = hctx->tx_cwnd / 2;
- if (hctx->tx_ssthresh < 2)
- hctx->tx_ssthresh = 2;
- hctx->tx_cwnd = 1;
- hctx->tx_pipe = 0;
+ hc->tx_ssthresh = hc->tx_cwnd / 2;
+ if (hc->tx_ssthresh < 2)
+ hc->tx_ssthresh = 2;
+ hc->tx_cwnd = 1;
+ hc->tx_pipe = 0;
/* clear state about stuff we sent */
- hctx->tx_seqt = hctx->tx_seqh;
- hctx->tx_packets_acked = 0;
+ hc->tx_seqt = hc->tx_seqh;
+ hc->tx_packets_acked = 0;
/* clear ack ratio state. */
- hctx->tx_rpseq = 0;
- hctx->tx_rpdupack = -1;
+ hc->tx_rpseq = 0;
+ hc->tx_rpdupack = -1;
ccid2_change_l_ack_ratio(sk, 1);
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
out:
bh_unlock_sock(sk);
sock_put(sk);
@@ -211,40 +211,40 @@ out:
static void ccid2_start_rto_timer(struct sock *sk)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- ccid2_pr_debug("setting RTO timeout=%ld\n", hctx->tx_rto);
+ ccid2_pr_debug("setting RTO timeout=%ld\n", hc->tx_rto);
- BUG_ON(timer_pending(&hctx->tx_rtotimer));
- sk_reset_timer(sk, &hctx->tx_rtotimer, jiffies + hctx->tx_rto);
+ BUG_ON(timer_pending(&hc->tx_rtotimer));
+ sk_reset_timer(sk, &hc->tx_rtotimer, jiffies + hc->tx_rto);
}
static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
{
struct dccp_sock *dp = dccp_sk(sk);
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
struct ccid2_seq *next;
- hctx->tx_pipe++;
+ hc->tx_pipe++;
- hctx->tx_seqh->ccid2s_seq = dp->dccps_gss;
- hctx->tx_seqh->ccid2s_acked = 0;
- hctx->tx_seqh->ccid2s_sent = jiffies;
+ hc->tx_seqh->ccid2s_seq = dp->dccps_gss;
+ hc->tx_seqh->ccid2s_acked = 0;
+ hc->tx_seqh->ccid2s_sent = jiffies;
- next = hctx->tx_seqh->ccid2s_next;
+ next = hc->tx_seqh->ccid2s_next;
/* check if we need to alloc more space */
- if (next == hctx->tx_seqt) {
- if (ccid2_hc_tx_alloc_seq(hctx)) {
+ if (next == hc->tx_seqt) {
+ if (ccid2_hc_tx_alloc_seq(hc)) {
DCCP_CRIT("packet history - out of memory!");
/* FIXME: find a more graceful way to bail out */
return;
}
- next = hctx->tx_seqh->ccid2s_next;
- BUG_ON(next == hctx->tx_seqt);
+ next = hc->tx_seqh->ccid2s_next;
+ BUG_ON(next == hc->tx_seqt);
}
- hctx->tx_seqh = next;
+ hc->tx_seqh = next;
- ccid2_pr_debug("cwnd=%d pipe=%d\n", hctx->tx_cwnd, hctx->tx_pipe);
+ ccid2_pr_debug("cwnd=%d pipe=%d\n", hc->tx_cwnd, hc->tx_pipe);
/*
* FIXME: The code below is broken and the variables have been removed
@@ -267,12 +267,12 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
*/
#if 0
/* Ack Ratio. Need to maintain a concept of how many windows we sent */
- hctx->tx_arsent++;
+ hc->tx_arsent++;
/* We had an ack loss in this window... */
- if (hctx->tx_ackloss) {
- if (hctx->tx_arsent >= hctx->tx_cwnd) {
- hctx->tx_arsent = 0;
- hctx->tx_ackloss = 0;
+ if (hc->tx_ackloss) {
+ if (hc->tx_arsent >= hc->tx_cwnd) {
+ hc->tx_arsent = 0;
+ hc->tx_ackloss = 0;
}
} else {
/* No acks lost up to now... */
@@ -282,28 +282,28 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
int denom = dp->dccps_l_ack_ratio * dp->dccps_l_ack_ratio -
dp->dccps_l_ack_ratio;
- denom = hctx->tx_cwnd * hctx->tx_cwnd / denom;
+ denom = hc->tx_cwnd * hc->tx_cwnd / denom;
- if (hctx->tx_arsent >= denom) {
+ if (hc->tx_arsent >= denom) {
ccid2_change_l_ack_ratio(sk, dp->dccps_l_ack_ratio - 1);
- hctx->tx_arsent = 0;
+ hc->tx_arsent = 0;
}
} else {
/* we can't increase ack ratio further [1] */
- hctx->tx_arsent = 0; /* or maybe set it to cwnd*/
+ hc->tx_arsent = 0; /* or maybe set it to cwnd*/
}
}
#endif
/* setup RTO timer */
- if (!timer_pending(&hctx->tx_rtotimer))
+ if (!timer_pending(&hc->tx_rtotimer))
ccid2_start_rto_timer(sk);
#ifdef CONFIG_IP_DCCP_CCID2_DEBUG
do {
- struct ccid2_seq *seqp = hctx->tx_seqt;
+ struct ccid2_seq *seqp = hc->tx_seqt;
- while (seqp != hctx->tx_seqh) {
+ while (seqp != hc->tx_seqh) {
ccid2_pr_debug("out seq=%llu acked=%d time=%lu\n",
(unsigned long long)seqp->ccid2s_seq,
seqp->ccid2s_acked, seqp->ccid2s_sent);
@@ -311,7 +311,7 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len)
}
} while (0);
ccid2_pr_debug("=========\n");
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
#endif
}
@@ -379,9 +379,9 @@ out_invalid_option:
static void ccid2_hc_tx_kill_rto_timer(struct sock *sk)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- sk_stop_timer(sk, &hctx->tx_rtotimer);
+ sk_stop_timer(sk, &hc->tx_rtotimer);
ccid2_pr_debug("deleted RTO timer\n");
}
@@ -389,75 +389,75 @@ static inline void ccid2_new_ack(struct sock *sk,
struct ccid2_seq *seqp,
unsigned int *maxincr)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- if (hctx->tx_cwnd < hctx->tx_ssthresh) {
- if (*maxincr > 0 && ++hctx->tx_packets_acked == 2) {
- hctx->tx_cwnd += 1;
- *maxincr -= 1;
- hctx->tx_packets_acked = 0;
+ if (hc->tx_cwnd < hc->tx_ssthresh) {
+ if (*maxincr > 0 && ++hc->tx_packets_acked == 2) {
+ hc->tx_cwnd += 1;
+ *maxincr -= 1;
+ hc->tx_packets_acked = 0;
}
- } else if (++hctx->tx_packets_acked >= hctx->tx_cwnd) {
- hctx->tx_cwnd += 1;
- hctx->tx_packets_acked = 0;
+ } else if (++hc->tx_packets_acked >= hc->tx_cwnd) {
+ hc->tx_cwnd += 1;
+ hc->tx_packets_acked = 0;
}
/* update RTO */
- if (hctx->tx_srtt == -1 ||
- time_after(jiffies, hctx->tx_lastrtt + hctx->tx_srtt)) {
+ if (hc->tx_srtt == -1 ||
+ time_after(jiffies, hc->tx_lastrtt + hc->tx_srtt)) {
unsigned long r = (long)jiffies - (long)seqp->ccid2s_sent;
int s;
/* first measurement */
- if (hctx->tx_srtt == -1) {
+ if (hc->tx_srtt == -1) {
ccid2_pr_debug("R: %lu Time=%lu seq=%llu\n",
r, jiffies,
(unsigned long long)seqp->ccid2s_seq);
- ccid2_change_srtt(hctx, r);
- hctx->tx_rttvar = r >> 1;
+ ccid2_change_srtt(hc, r);
+ hc->tx_rttvar = r >> 1;
} else {
/* RTTVAR */
- long tmp = hctx->tx_srtt - r;
+ long tmp = hc->tx_srtt - r;
long srtt;
if (tmp < 0)
tmp *= -1;
tmp >>= 2;
- hctx->tx_rttvar *= 3;
- hctx->tx_rttvar >>= 2;
- hctx->tx_rttvar += tmp;
+ hc->tx_rttvar *= 3;
+ hc->tx_rttvar >>= 2;
+ hc->tx_rttvar += tmp;
/* SRTT */
- srtt = hctx->tx_srtt;
+ srtt = hc->tx_srtt;
srtt *= 7;
srtt >>= 3;
tmp = r >> 3;
srtt += tmp;
- ccid2_change_srtt(hctx, srtt);
+ ccid2_change_srtt(hc, srtt);
}
- s = hctx->tx_rttvar << 2;
+ s = hc->tx_rttvar << 2;
/* clock granularity is 1 when based on jiffies */
if (!s)
s = 1;
- hctx->tx_rto = hctx->tx_srtt + s;
+ hc->tx_rto = hc->tx_srtt + s;
/* must be at least a second */
- s = hctx->tx_rto / HZ;
+ s = hc->tx_rto / HZ;
/* DCCP doesn't require this [but I like it cuz my code sux] */
#if 1
if (s < 1)
- hctx->tx_rto = HZ;
+ hc->tx_rto = HZ;
#endif
/* max 60 seconds */
if (s > 60)
- hctx->tx_rto = HZ * 60;
+ hc->tx_rto = HZ * 60;
- hctx->tx_lastrtt = jiffies;
+ hc->tx_lastrtt = jiffies;
ccid2_pr_debug("srtt: %ld rttvar: %ld rto: %ld (HZ=%d) R=%lu\n",
- hctx->tx_srtt, hctx->tx_rttvar,
- hctx->tx_rto, HZ, r);
+ hc->tx_srtt, hc->tx_rttvar,
+ hc->tx_rto, HZ, r);
}
/* we got a new ack, so re-start RTO timer */
@@ -467,40 +467,40 @@ static inline void ccid2_new_ack(struct sock *sk,
static void ccid2_hc_tx_dec_pipe(struct sock *sk)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- if (hctx->tx_pipe == 0)
+ if (hc->tx_pipe == 0)
DCCP_BUG("pipe == 0");
else
- hctx->tx_pipe--;
+ hc->tx_pipe--;
- if (hctx->tx_pipe == 0)
+ if (hc->tx_pipe == 0)
ccid2_hc_tx_kill_rto_timer(sk);
}
static void ccid2_congestion_event(struct sock *sk, struct ccid2_seq *seqp)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
- if (time_before(seqp->ccid2s_sent, hctx->tx_last_cong)) {
+ if (time_before(seqp->ccid2s_sent, hc->tx_last_cong)) {
ccid2_pr_debug("Multiple losses in an RTT---treating as one\n");
return;
}
- hctx->tx_last_cong = jiffies;
+ hc->tx_last_cong = jiffies;
- hctx->tx_cwnd = hctx->tx_cwnd / 2 ? : 1U;
- hctx->tx_ssthresh = max(hctx->tx_cwnd, 2U);
+ hc->tx_cwnd = hc->tx_cwnd / 2 ? : 1U;
+ hc->tx_ssthresh = max(hc->tx_cwnd, 2U);
/* Avoid spurious timeouts resulting from Ack Ratio > cwnd */
- if (dccp_sk(sk)->dccps_l_ack_ratio > hctx->tx_cwnd)
- ccid2_change_l_ack_ratio(sk, hctx->tx_cwnd);
+ if (dccp_sk(sk)->dccps_l_ack_ratio > hc->tx_cwnd)
+ ccid2_change_l_ack_ratio(sk, hc->tx_cwnd);
}
static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
struct dccp_sock *dp = dccp_sk(sk);
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
u64 ackno, seqno;
struct ccid2_seq *seqp;
unsigned char *vector;
@@ -509,7 +509,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
int done = 0;
unsigned int maxincr = 0;
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
/* check reverse path congestion */
seqno = DCCP_SKB_CB(skb)->dccpd_seq;
@@ -518,21 +518,21 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* -sorbo.
*/
/* need to bootstrap */
- if (hctx->tx_rpdupack == -1) {
- hctx->tx_rpdupack = 0;
- hctx->tx_rpseq = seqno;
+ if (hc->tx_rpdupack == -1) {
+ hc->tx_rpdupack = 0;
+ hc->tx_rpseq = seqno;
} else {
/* check if packet is consecutive */
- if (dccp_delta_seqno(hctx->tx_rpseq, seqno) == 1)
- hctx->tx_rpseq = seqno;
+ if (dccp_delta_seqno(hc->tx_rpseq, seqno) == 1)
+ hc->tx_rpseq = seqno;
/* it's a later packet */
- else if (after48(seqno, hctx->tx_rpseq)) {
- hctx->tx_rpdupack++;
+ else if (after48(seqno, hc->tx_rpseq)) {
+ hc->tx_rpdupack++;
/* check if we got enough dupacks */
- if (hctx->tx_rpdupack >= NUMDUPACK) {
- hctx->tx_rpdupack = -1; /* XXX lame */
- hctx->tx_rpseq = 0;
+ if (hc->tx_rpdupack >= NUMDUPACK) {
+ hc->tx_rpdupack = -1; /* XXX lame */
+ hc->tx_rpseq = 0;
ccid2_change_l_ack_ratio(sk, 2 * dp->dccps_l_ack_ratio);
}
@@ -541,7 +541,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* check forward path congestion */
/* still didn't send out new data packets */
- if (hctx->tx_seqh == hctx->tx_seqt)
+ if (hc->tx_seqh == hc->tx_seqt)
return;
switch (DCCP_SKB_CB(skb)->dccpd_type) {
@@ -553,14 +553,14 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
ackno = DCCP_SKB_CB(skb)->dccpd_ack_seq;
- if (after48(ackno, hctx->tx_high_ack))
- hctx->tx_high_ack = ackno;
+ if (after48(ackno, hc->tx_high_ack))
+ hc->tx_high_ack = ackno;
- seqp = hctx->tx_seqt;
+ seqp = hc->tx_seqt;
while (before48(seqp->ccid2s_seq, ackno)) {
seqp = seqp->ccid2s_next;
- if (seqp == hctx->tx_seqh) {
- seqp = hctx->tx_seqh->ccid2s_prev;
+ if (seqp == hc->tx_seqh) {
+ seqp = hc->tx_seqh->ccid2s_prev;
break;
}
}
@@ -570,7 +570,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* packets per acknowledgement. Rounding up avoids that cwnd is not
* advanced when Ack Ratio is 1 and gives a slight edge otherwise.
*/
- if (hctx->tx_cwnd < hctx->tx_ssthresh)
+ if (hc->tx_cwnd < hc->tx_ssthresh)
maxincr = DIV_ROUND_UP(dp->dccps_l_ack_ratio, 2);
/* go through all ack vectors */
@@ -589,7 +589,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* seqnos.
*/
while (after48(seqp->ccid2s_seq, ackno)) {
- if (seqp == hctx->tx_seqt) {
+ if (seqp == hc->tx_seqt) {
done = 1;
break;
}
@@ -621,7 +621,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
(unsigned long long)seqp->ccid2s_seq);
ccid2_hc_tx_dec_pipe(sk);
}
- if (seqp == hctx->tx_seqt) {
+ if (seqp == hc->tx_seqt) {
done = 1;
break;
}
@@ -640,11 +640,11 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* The state about what is acked should be correct now
* Check for NUMDUPACK
*/
- seqp = hctx->tx_seqt;
- while (before48(seqp->ccid2s_seq, hctx->tx_high_ack)) {
+ seqp = hc->tx_seqt;
+ while (before48(seqp->ccid2s_seq, hc->tx_high_ack)) {
seqp = seqp->ccid2s_next;
- if (seqp == hctx->tx_seqh) {
- seqp = hctx->tx_seqh->ccid2s_prev;
+ if (seqp == hc->tx_seqh) {
+ seqp = hc->tx_seqh->ccid2s_prev;
break;
}
}
@@ -655,7 +655,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (done == NUMDUPACK)
break;
}
- if (seqp == hctx->tx_seqt)
+ if (seqp == hc->tx_seqt)
break;
seqp = seqp->ccid2s_prev;
}
@@ -678,86 +678,86 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
ccid2_congestion_event(sk, seqp);
ccid2_hc_tx_dec_pipe(sk);
}
- if (seqp == hctx->tx_seqt)
+ if (seqp == hc->tx_seqt)
break;
seqp = seqp->ccid2s_prev;
}
- hctx->tx_seqt = last_acked;
+ hc->tx_seqt = last_acked;
}
/* trim acked packets in tail */
- while (hctx->tx_seqt != hctx->tx_seqh) {
- if (!hctx->tx_seqt->ccid2s_acked)
+ while (hc->tx_seqt != hc->tx_seqh) {
+ if (!hc->tx_seqt->ccid2s_acked)
break;
- hctx->tx_seqt = hctx->tx_seqt->ccid2s_next;
+ hc->tx_seqt = hc->tx_seqt->ccid2s_next;
}
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
}
static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
- struct ccid2_hc_tx_sock *hctx = ccid_priv(ccid);
+ struct ccid2_hc_tx_sock *hc = ccid_priv(ccid);
struct dccp_sock *dp = dccp_sk(sk);
u32 max_ratio;
/* RFC 4341, 5: initialise ssthresh to arbitrarily high (max) value */
- hctx->tx_ssthresh = ~0U;
+ hc->tx_ssthresh = ~0U;
/*
* RFC 4341, 5: "The cwnd parameter is initialized to at most four
* packets for new connections, following the rules from [RFC3390]".
* We need to convert the bytes of RFC3390 into the packets of RFC 4341.
*/
- hctx->tx_cwnd = clamp(4380U / dp->dccps_mss_cache, 2U, 4U);
+ hc->tx_cwnd = clamp(4380U / dp->dccps_mss_cache, 2U, 4U);
/* Make sure that Ack Ratio is enabled and within bounds. */
- max_ratio = DIV_ROUND_UP(hctx->tx_cwnd, 2);
+ max_ratio = DIV_ROUND_UP(hc->tx_cwnd, 2);
if (dp->dccps_l_ack_ratio == 0 || dp->dccps_l_ack_ratio > max_ratio)
dp->dccps_l_ack_ratio = max_ratio;
/* XXX init ~ to window size... */
- if (ccid2_hc_tx_alloc_seq(hctx))
+ if (ccid2_hc_tx_alloc_seq(hc))
return -ENOMEM;
- hctx->tx_rto = 3 * HZ;
- ccid2_change_srtt(hctx, -1);
- hctx->tx_rttvar = -1;
- hctx->tx_rpdupack = -1;
- hctx->tx_last_cong = jiffies;
- setup_timer(&hctx->tx_rtotimer, ccid2_hc_tx_rto_expire,
+ hc->tx_rto = 3 * HZ;
+ ccid2_change_srtt(hc, -1);
+ hc->tx_rttvar = -1;
+ hc->tx_rpdupack = -1;
+ hc->tx_last_cong = jiffies;
+ setup_timer(&hc->tx_rtotimer, ccid2_hc_tx_rto_expire,
(unsigned long)sk);
- ccid2_hc_tx_check_sanity(hctx);
+ ccid2_hc_tx_check_sanity(hc);
return 0;
}
static void ccid2_hc_tx_exit(struct sock *sk)
{
- struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk);
+ struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
int i;
ccid2_hc_tx_kill_rto_timer(sk);
- for (i = 0; i < hctx->tx_seqbufc; i++)
- kfree(hctx->tx_seqbuf[i]);
- hctx->tx_seqbufc = 0;
+ for (i = 0; i < hc->tx_seqbufc; i++)
+ kfree(hc->tx_seqbuf[i]);
+ hc->tx_seqbufc = 0;
}
static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
const struct dccp_sock *dp = dccp_sk(sk);
- struct ccid2_hc_rx_sock *hcrx = ccid2_hc_rx_sk(sk);
+ struct ccid2_hc_rx_sock *hc = ccid2_hc_rx_sk(sk);
switch (DCCP_SKB_CB(skb)->dccpd_type) {
case DCCP_PKT_DATA:
case DCCP_PKT_DATAACK:
- hcrx->rx_data++;
- if (hcrx->rx_data >= dp->dccps_r_ack_ratio) {
+ hc->rx_data++;
+ if (hc->rx_data >= dp->dccps_r_ack_ratio) {
dccp_send_ack(sk);
- hcrx->rx_data = 0;
+ hc->rx_data = 0;
}
break;
}
^ permalink raw reply
* [PATCH 0/4][RFC]: coding convention for CCID-struct prefixes
From: Gerrit Renker @ 2009-10-05 10:53 UTC (permalink / raw)
To: acme; +Cc: davem, dccp, netdev
In-Reply-To: <ccid_coding_convention>
Arnaldo, Dave,
this codifies new naming scheme discussed at netconf. Can you please have a
look and indicate whether you are ok with the set?
They are divided into 4 for readability, but can be combined into
one large patch if agreed.
It is all just regexp substitutions:
Patch #1: Introduces the naming scheme on CCID-2:
s#hc\(tx\|rx\)->ccid2hc\1_#hc\1->\1_#g;
s#ccid2hc\(tx\|rx\)_#\1_#g;
Patch #2: Extends the changes of patch#1 to CCID-3.
Patch #3: Removes the second, repetitive redundancy in this scheme:
s#hc\(tx\|rx\)->\1_#hc->\1_#g;
Patch #4: Extends patch#3 from CCID-2 to CCID-3.
--
ccids/ccid2.c | 595 ++++++++++++++++++++++++-------------------------
ccids/ccid2.h | 46 +--
ccids/ccid3.c | 692 +++++++++++++++++++++++++++-------------------------------
ccids/ccid3.h | 120 +++++-----
probe.c | 22 -
5 files changed, 723 insertions(+), 752 deletions(-)
^ permalink raw reply
* £750,000.00
From: Toyota Award @ 2009-10-05 10:53 UTC (permalink / raw)
£750,000.00 has been given to you by the toyota company award, Reply back with your Name: Occupation:Country:Sex
^ permalink raw reply
* Re: [PATCH 0/4][RFC]: coding convention for CCID-struct prefixes
From: David Miller @ 2009-10-05 10:58 UTC (permalink / raw)
To: gerrit; +Cc: acme, dccp, netdev
In-Reply-To: <1254739993-5051-1-git-send-email-gerrit@erg.abdn.ac.uk>
From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Date: Mon, 5 Oct 2009 12:53:09 +0200
> this codifies new naming scheme discussed at netconf. Can you please have a
> look and indicate whether you are ok with the set?
>
> They are divided into 4 for readability, but can be combined into
> one large patch if agreed.
This looks like an improvement to me, I guess.
You can keep it as 4 patches.
After Arnaldo takes a look, I can add this as-is to net-next-2.6
if you like.
^ permalink raw reply
* What is the "ll header" of a PPP Interface?
From: Peter Daum @ 2009-10-05 9:30 UTC (permalink / raw)
To: netdev
Hi,
I occasionally get syslog messages about "martians" coming in on a PPP interface.
Normally, the reported ll header is the 2 involved MAC addresses and the ethernet
frame type. For the PPP interface however, the reported ll header is 22 bytes long
and I can't find any information about the significance of it.
Can somebody here maybe enlighten me?
Regards,
Peter
^ permalink raw reply
* Re: [PATCH 1/3] bonding: allow previous slave to be used when re-balancing traffic on tlb/alb interfaces
From: David Miller @ 2009-10-05 10:43 UTC (permalink / raw)
To: fubar; +Cc: andy, netdev
In-Reply-To: <8075.1254532437@death.nxdomain.ibm.com>
From: Jay Vosburgh <fubar@us.ibm.com>
Date: Fri, 02 Oct 2009 18:13:57 -0700
> Andy, I've been doing some further testing with this patch, and
> I'm seeing some panics that I believe are related to this patch. It
> appears that the last_slave isn't cleared (or isn't cleared soon enough)
> when a slave is released, and concurrent transmit activity is getting
> into alb_get_best_slave() and finding a last_slave pointer that is stale
> (points to no slave currently on the slave list).
I'm holding off on these 3 bonding patches until this is resolved.
^ permalink raw reply
* net-next-2.6 is open...
From: David Miller @ 2009-10-05 10:36 UTC (permalink / raw)
To: netdev
As people have probably noticed net-next-2.6 is open for business
at the usual location:
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6.git
Pace yourselves and don't let net-next-2.6 development get in the way
of fixing net-2.6 bugs. :-)
Thanks!
^ permalink raw reply
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