* [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality
@ 2017-10-12 0:43 Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 1/7] net: qualcomm: rmnet: Remove existing logic for bridge mode Subash Abhinov Kasiviswanathan
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
This series fixes some of the broken rmnet functionality.
Bridge mode is re-written and made useable and the muxed_ep is converted to hlist.
Patches 1-5 are cleanups in preparation for these changes.
Patch 6 does the hlist conversion.
Patch 7 has the implementation of the rmnet bridge mode.
v1->v2: Fix the warning and code style issue in rmnet_rx_handler as
mentioned by David.
Subash Abhinov Kasiviswanathan (7):
net: qualcomm: rmnet: Remove existing logic for bridge mode
net: qualcomm: rmnet: Remove some unused defines
net: qualcomm: rmnet: Move rmnet_mode to rmnet_port
net: qualcomm: rmnet: Remove duplicate setting of rmnet private info
net: qualcomm: rmnet: Remove duplicate setting of rmnet_devices
net: qualcomm: rmnet: Convert the muxed endpoint to hlist
net: qualcomm: rmnet: Implement bridge mode
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c | 166 ++++++++++++++++-----
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 19 +--
.../net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 137 +++++++----------
.../net/ethernet/qualcomm/rmnet/rmnet_handlers.h | 3 +-
.../ethernet/qualcomm/rmnet/rmnet_map_command.c | 4 +-
.../net/ethernet/qualcomm/rmnet/rmnet_private.h | 8 -
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 36 ++---
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h | 7 +-
8 files changed, 207 insertions(+), 173 deletions(-)
--
1.9.1
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH net-next v2 1/7] net: qualcomm: rmnet: Remove existing logic for bridge mode
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 2/7] net: qualcomm: rmnet: Remove some unused defines Subash Abhinov Kasiviswanathan
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
This will be rewritten in the following patches.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 1 -
.../net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 77 +++-------------------
2 files changed, 9 insertions(+), 69 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index dde4e9f..0b0c5a7 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -34,7 +34,6 @@ struct rmnet_endpoint {
*/
struct rmnet_port {
struct net_device *dev;
- struct rmnet_endpoint local_ep;
struct rmnet_endpoint muxed_ep[RMNET_MAX_LOGICAL_EP];
u32 ingress_data_format;
u32 egress_data_format;
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index 540c762..b50f401 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -44,56 +44,18 @@ static void rmnet_set_skb_proto(struct sk_buff *skb)
/* Generic handler */
static rx_handler_result_t
-rmnet_bridge_handler(struct sk_buff *skb, struct rmnet_endpoint *ep)
+rmnet_deliver_skb(struct sk_buff *skb)
{
- if (!ep->egress_dev)
- kfree_skb(skb);
- else
- rmnet_egress_handler(skb, ep);
+ skb_reset_transport_header(skb);
+ skb_reset_network_header(skb);
+ rmnet_vnd_rx_fixup(skb, skb->dev);
+ skb->pkt_type = PACKET_HOST;
+ skb_set_mac_header(skb, 0);
+ netif_receive_skb(skb);
return RX_HANDLER_CONSUMED;
}
-static rx_handler_result_t
-rmnet_deliver_skb(struct sk_buff *skb, struct rmnet_endpoint *ep)
-{
- switch (ep->rmnet_mode) {
- case RMNET_EPMODE_NONE:
- return RX_HANDLER_PASS;
-
- case RMNET_EPMODE_BRIDGE:
- return rmnet_bridge_handler(skb, ep);
-
- case RMNET_EPMODE_VND:
- skb_reset_transport_header(skb);
- skb_reset_network_header(skb);
- rmnet_vnd_rx_fixup(skb, skb->dev);
-
- skb->pkt_type = PACKET_HOST;
- skb_set_mac_header(skb, 0);
- netif_receive_skb(skb);
- return RX_HANDLER_CONSUMED;
-
- default:
- kfree_skb(skb);
- return RX_HANDLER_CONSUMED;
- }
-}
-
-static rx_handler_result_t
-rmnet_ingress_deliver_packet(struct sk_buff *skb,
- struct rmnet_port *port)
-{
- if (!port) {
- kfree_skb(skb);
- return RX_HANDLER_CONSUMED;
- }
-
- skb->dev = port->local_ep.egress_dev;
-
- return rmnet_deliver_skb(skb, &port->local_ep);
-}
-
/* MAP handler */
static rx_handler_result_t
@@ -130,7 +92,7 @@ static void rmnet_set_skb_proto(struct sk_buff *skb)
skb_pull(skb, sizeof(struct rmnet_map_header));
skb_trim(skb, len);
rmnet_set_skb_proto(skb);
- return rmnet_deliver_skb(skb, ep);
+ return rmnet_deliver_skb(skb);
}
static rx_handler_result_t
@@ -204,29 +166,8 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
dev = skb->dev;
port = rmnet_get_port(dev);
- if (port->ingress_data_format & RMNET_INGRESS_FORMAT_MAP) {
+ if (port->ingress_data_format & RMNET_INGRESS_FORMAT_MAP)
rc = rmnet_map_ingress_handler(skb, port);
- } else {
- switch (ntohs(skb->protocol)) {
- case ETH_P_MAP:
- if (port->local_ep.rmnet_mode ==
- RMNET_EPMODE_BRIDGE) {
- rc = rmnet_ingress_deliver_packet(skb, port);
- } else {
- kfree_skb(skb);
- rc = RX_HANDLER_CONSUMED;
- }
- break;
-
- case ETH_P_IP:
- case ETH_P_IPV6:
- rc = rmnet_ingress_deliver_packet(skb, port);
- break;
-
- default:
- rc = RX_HANDLER_PASS;
- }
- }
return rc;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 2/7] net: qualcomm: rmnet: Remove some unused defines
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 1/7] net: qualcomm: rmnet: Remove existing logic for bridge mode Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 3/7] net: qualcomm: rmnet: Move rmnet_mode to rmnet_port Subash Abhinov Kasiviswanathan
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
Most of these constants were used in the initial patchset where
custom netlink configuration was used and hence are no longer relevant.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_private.h | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_private.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_private.h
index 7967198..49102f9 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_private.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_private.h
@@ -19,23 +19,15 @@
#define RMNET_TX_QUEUE_LEN 1000
/* Constants */
-#define RMNET_EGRESS_FORMAT__RESERVED__ BIT(0)
#define RMNET_EGRESS_FORMAT_MAP BIT(1)
#define RMNET_EGRESS_FORMAT_AGGREGATION BIT(2)
#define RMNET_EGRESS_FORMAT_MUXING BIT(3)
-#define RMNET_EGRESS_FORMAT_MAP_CKSUMV3 BIT(4)
-#define RMNET_EGRESS_FORMAT_MAP_CKSUMV4 BIT(5)
-#define RMNET_INGRESS_FIX_ETHERNET BIT(0)
#define RMNET_INGRESS_FORMAT_MAP BIT(1)
#define RMNET_INGRESS_FORMAT_DEAGGREGATION BIT(2)
#define RMNET_INGRESS_FORMAT_DEMUXING BIT(3)
#define RMNET_INGRESS_FORMAT_MAP_COMMANDS BIT(4)
-#define RMNET_INGRESS_FORMAT_MAP_CKSUMV3 BIT(5)
-#define RMNET_INGRESS_FORMAT_MAP_CKSUMV4 BIT(6)
-/* Pass the frame up the stack with no modifications to skb->dev */
-#define RMNET_EPMODE_NONE (0)
/* Replace skb->dev to a virtual rmnet device and pass up the stack */
#define RMNET_EPMODE_VND (1)
/* Pass the frame directly to another device with dev_queue_xmit() */
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 3/7] net: qualcomm: rmnet: Move rmnet_mode to rmnet_port
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 1/7] net: qualcomm: rmnet: Remove existing logic for bridge mode Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 2/7] net: qualcomm: rmnet: Remove some unused defines Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 4/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet private info Subash Abhinov Kasiviswanathan
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
Mode information on the real device makes it easier to route packets
to rmnet device or bridged device based on the configuration.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c | 12 +++++-------
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 2 +-
drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 3 +--
3 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
index 8403eea..85fce9c 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
@@ -124,20 +124,17 @@ static int rmnet_register_real_device(struct net_device *real_dev)
}
static void rmnet_set_endpoint_config(struct net_device *dev,
- u8 mux_id, u8 rmnet_mode,
- struct net_device *egress_dev)
+ u8 mux_id, struct net_device *egress_dev)
{
struct rmnet_endpoint *ep;
- netdev_dbg(dev, "id %d mode %d dev %s\n",
- mux_id, rmnet_mode, egress_dev->name);
+ netdev_dbg(dev, "id %d dev %s\n", mux_id, egress_dev->name);
ep = rmnet_get_endpoint(dev, mux_id);
/* This config is cleared on every set, so its ok to not
* clear it on a device delete.
*/
memset(ep, 0, sizeof(struct rmnet_endpoint));
- ep->rmnet_mode = rmnet_mode;
ep->egress_dev = egress_dev;
ep->mux_id = mux_id;
}
@@ -183,9 +180,10 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
ingress_format, egress_format);
port->egress_data_format = egress_format;
port->ingress_data_format = ingress_format;
+ port->rmnet_mode = mode;
- rmnet_set_endpoint_config(real_dev, mux_id, mode, dev);
- rmnet_set_endpoint_config(dev, mux_id, mode, real_dev);
+ rmnet_set_endpoint_config(real_dev, mux_id, dev);
+ rmnet_set_endpoint_config(dev, mux_id, real_dev);
return 0;
err2:
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index 0b0c5a7..03d473f 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -24,7 +24,6 @@
* Exact usage of this parameter depends on the rmnet_mode.
*/
struct rmnet_endpoint {
- u8 rmnet_mode;
u8 mux_id;
struct net_device *egress_dev;
};
@@ -39,6 +38,7 @@ struct rmnet_port {
u32 egress_data_format;
struct net_device *rmnet_devices[RMNET_MAX_LOGICAL_EP];
u8 nr_rmnet_devs;
+ u8 rmnet_mode;
};
extern struct rtnl_link_ops rmnet_link_ops;
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index b50f401..86e37cc 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -205,8 +205,7 @@ void rmnet_egress_handler(struct sk_buff *skb,
}
}
- if (ep->rmnet_mode == RMNET_EPMODE_VND)
- rmnet_vnd_tx_fixup(skb, orig_dev);
+ rmnet_vnd_tx_fixup(skb, orig_dev);
dev_queue_xmit(skb);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 4/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet private info
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
` (2 preceding siblings ...)
2017-10-12 0:43 ` [PATCH net-next v2 3/7] net: qualcomm: rmnet: Move rmnet_mode to rmnet_port Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 5/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet_devices Subash Abhinov Kasiviswanathan
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
The end point is set twice in the local_ep as well as the mux_id and
the real_dev in the rmnet private structure. Remove the local_ep.
While these elements are equivalent, rmnet_endpoint will be
used only as part of the rmnet_port for muxed scenarios in VND mode.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c | 10 ++--------
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 4 ----
drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 18 ++++++++++--------
drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.h | 3 +--
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 19 ++-----------------
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h | 1 -
6 files changed, 15 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
index 85fce9c..96058bb 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
@@ -67,13 +67,8 @@ static int rmnet_is_real_dev_registered(const struct net_device *real_dev)
struct rmnet_endpoint *ep;
struct rmnet_port *port;
- if (!rmnet_is_real_dev_registered(dev)) {
- ep = rmnet_vnd_get_endpoint(dev);
- } else {
- port = rmnet_get_port_rtnl(dev);
-
- ep = &port->muxed_ep[config_id];
- }
+ port = rmnet_get_port_rtnl(dev);
+ ep = &port->muxed_ep[config_id];
return ep;
}
@@ -183,7 +178,6 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
port->rmnet_mode = mode;
rmnet_set_endpoint_config(real_dev, mux_id, dev);
- rmnet_set_endpoint_config(dev, mux_id, real_dev);
return 0;
err2:
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index 03d473f..c5f5c6d 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -20,9 +20,6 @@
#define RMNET_MAX_LOGICAL_EP 255
-/* Information about the next device to deliver the packet to.
- * Exact usage of this parameter depends on the rmnet_mode.
- */
struct rmnet_endpoint {
u8 mux_id;
struct net_device *egress_dev;
@@ -44,7 +41,6 @@ struct rmnet_port {
extern struct rtnl_link_ops rmnet_link_ops;
struct rmnet_priv {
- struct rmnet_endpoint local_ep;
u8 mux_id;
struct net_device *real_dev;
};
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index 86e37cc..e0802d3 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -116,8 +116,7 @@ static void rmnet_set_skb_proto(struct sk_buff *skb)
}
static int rmnet_map_egress_handler(struct sk_buff *skb,
- struct rmnet_port *port,
- struct rmnet_endpoint *ep,
+ struct rmnet_port *port, u8 mux_id,
struct net_device *orig_dev)
{
int required_headroom, additional_header_len;
@@ -136,10 +135,10 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
return RMNET_MAP_CONSUMED;
if (port->egress_data_format & RMNET_EGRESS_FORMAT_MUXING) {
- if (ep->mux_id == 0xff)
+ if (mux_id == 0xff)
map_header->mux_id = 0;
else
- map_header->mux_id = ep->mux_id;
+ map_header->mux_id = mux_id;
}
skb->protocol = htons(ETH_P_MAP);
@@ -176,14 +175,17 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
* for egress device configured in logical endpoint. Packet is then transmitted
* on the egress device.
*/
-void rmnet_egress_handler(struct sk_buff *skb,
- struct rmnet_endpoint *ep)
+void rmnet_egress_handler(struct sk_buff *skb)
{
struct net_device *orig_dev;
struct rmnet_port *port;
+ struct rmnet_priv *priv;
+ u8 mux_id;
orig_dev = skb->dev;
- skb->dev = ep->egress_dev;
+ priv = netdev_priv(orig_dev);
+ skb->dev = priv->real_dev;
+ mux_id = priv->mux_id;
port = rmnet_get_port(skb->dev);
if (!port) {
@@ -192,7 +194,7 @@ void rmnet_egress_handler(struct sk_buff *skb,
}
if (port->egress_data_format & RMNET_EGRESS_FORMAT_MAP) {
- switch (rmnet_map_egress_handler(skb, port, ep, orig_dev)) {
+ switch (rmnet_map_egress_handler(skb, port, mux_id, orig_dev)) {
case RMNET_MAP_CONSUMED:
return;
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.h
index f2638cf..3537e4c 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.h
@@ -18,8 +18,7 @@
#include "rmnet_config.h"
-void rmnet_egress_handler(struct sk_buff *skb,
- struct rmnet_endpoint *ep);
+void rmnet_egress_handler(struct sk_buff *skb);
rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb);
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index 7f90d55..4ca59a4 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -45,8 +45,8 @@ static netdev_tx_t rmnet_vnd_start_xmit(struct sk_buff *skb,
struct rmnet_priv *priv;
priv = netdev_priv(dev);
- if (priv->local_ep.egress_dev) {
- rmnet_egress_handler(skb, &priv->local_ep);
+ if (priv->real_dev) {
+ rmnet_egress_handler(skb);
} else {
dev->stats.tx_dropped++;
kfree_skb(skb);
@@ -143,21 +143,6 @@ u8 rmnet_vnd_get_mux(struct net_device *rmnet_dev)
return priv->mux_id;
}
-/* Gets the logical endpoint configuration for a RmNet virtual network device
- * node. Caller should confirm that devices is a RmNet VND before calling.
- */
-struct rmnet_endpoint *rmnet_vnd_get_endpoint(struct net_device *rmnet_dev)
-{
- struct rmnet_priv *priv;
-
- if (!rmnet_dev)
- return NULL;
-
- priv = netdev_priv(rmnet_dev);
-
- return &priv->local_ep;
-}
-
int rmnet_vnd_do_flow_control(struct net_device *rmnet_dev, int enable)
{
netdev_dbg(rmnet_dev, "Setting VND TX queue state to %d\n", enable);
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
index 8a4042f..cae134d 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
@@ -17,7 +17,6 @@
#define _RMNET_VND_H_
int rmnet_vnd_do_flow_control(struct net_device *dev, int enable);
-struct rmnet_endpoint *rmnet_vnd_get_endpoint(struct net_device *dev);
int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
struct rmnet_port *port,
struct net_device *real_dev);
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 5/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet_devices
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
` (3 preceding siblings ...)
2017-10-12 0:43 ` [PATCH net-next v2 4/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet private info Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 6/7] net: qualcomm: rmnet: Convert the muxed endpoint to hlist Subash Abhinov Kasiviswanathan
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
The rmnet_devices information is already stored in muxed_ep, so
storing this in rmnet_devices[] again is redundant.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 1 -
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 8 ++++----
2 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index c5f5c6d..123ccf4 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -33,7 +33,6 @@ struct rmnet_port {
struct rmnet_endpoint muxed_ep[RMNET_MAX_LOGICAL_EP];
u32 ingress_data_format;
u32 egress_data_format;
- struct net_device *rmnet_devices[RMNET_MAX_LOGICAL_EP];
u8 nr_rmnet_devs;
u8 rmnet_mode;
};
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index 4ca59a4..8b8497b 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -105,12 +105,12 @@ int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
struct rmnet_priv *priv;
int rc;
- if (port->rmnet_devices[id])
+ if (port->muxed_ep[id].egress_dev)
return -EINVAL;
rc = register_netdevice(rmnet_dev);
if (!rc) {
- port->rmnet_devices[id] = rmnet_dev;
+ port->muxed_ep[id].egress_dev = rmnet_dev;
port->nr_rmnet_devs++;
rmnet_dev->rtnl_link_ops = &rmnet_link_ops;
@@ -127,10 +127,10 @@ int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
int rmnet_vnd_dellink(u8 id, struct rmnet_port *port)
{
- if (id >= RMNET_MAX_LOGICAL_EP || !port->rmnet_devices[id])
+ if (id >= RMNET_MAX_LOGICAL_EP || !port->muxed_ep[id].egress_dev)
return -EINVAL;
- port->rmnet_devices[id] = NULL;
+ port->muxed_ep[id].egress_dev = NULL;
port->nr_rmnet_devs--;
return 0;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 6/7] net: qualcomm: rmnet: Convert the muxed endpoint to hlist
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
` (4 preceding siblings ...)
2017-10-12 0:43 ` [PATCH net-next v2 5/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet_devices Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 7/7] net: qualcomm: rmnet: Implement bridge mode Subash Abhinov Kasiviswanathan
2017-10-12 3:10 ` [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality David Miller
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan, Dan Williams
Rather than using a static array, use a hlist to store the muxed
endpoints and use the mux id to query the rmnet_device.
This is useful as usually very few mux ids are used.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Cc: Dan Williams <dcbw@redhat.com>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c | 75 ++++++++++++----------
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 4 +-
.../net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 17 +++--
.../ethernet/qualcomm/rmnet/rmnet_map_command.c | 4 +-
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 15 +++--
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h | 6 +-
6 files changed, 68 insertions(+), 53 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
index 96058bb..b5fe3f4 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
@@ -61,18 +61,6 @@ static int rmnet_is_real_dev_registered(const struct net_device *real_dev)
return rtnl_dereference(real_dev->rx_handler_data);
}
-static struct rmnet_endpoint*
-rmnet_get_endpoint(struct net_device *dev, int config_id)
-{
- struct rmnet_endpoint *ep;
- struct rmnet_port *port;
-
- port = rmnet_get_port_rtnl(dev);
- ep = &port->muxed_ep[config_id];
-
- return ep;
-}
-
static int rmnet_unregister_real_device(struct net_device *real_dev,
struct rmnet_port *port)
{
@@ -93,7 +81,7 @@ static int rmnet_unregister_real_device(struct net_device *real_dev,
static int rmnet_register_real_device(struct net_device *real_dev)
{
struct rmnet_port *port;
- int rc;
+ int rc, entry;
ASSERT_RTNL();
@@ -114,26 +102,13 @@ static int rmnet_register_real_device(struct net_device *real_dev)
/* hold on to real dev for MAP data */
dev_hold(real_dev);
+ for (entry = 0; entry < RMNET_MAX_LOGICAL_EP; entry++)
+ INIT_HLIST_HEAD(&port->muxed_ep[entry]);
+
netdev_dbg(real_dev, "registered with rmnet\n");
return 0;
}
-static void rmnet_set_endpoint_config(struct net_device *dev,
- u8 mux_id, struct net_device *egress_dev)
-{
- struct rmnet_endpoint *ep;
-
- netdev_dbg(dev, "id %d dev %s\n", mux_id, egress_dev->name);
-
- ep = rmnet_get_endpoint(dev, mux_id);
- /* This config is cleared on every set, so its ok to not
- * clear it on a device delete.
- */
- memset(ep, 0, sizeof(struct rmnet_endpoint));
- ep->egress_dev = egress_dev;
- ep->mux_id = mux_id;
-}
-
static int rmnet_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
@@ -145,6 +120,7 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
RMNET_EGRESS_FORMAT_MAP;
struct net_device *real_dev;
int mode = RMNET_EPMODE_VND;
+ struct rmnet_endpoint *ep;
struct rmnet_port *port;
int err = 0;
u16 mux_id;
@@ -156,6 +132,10 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
if (!data[IFLA_VLAN_ID])
return -EINVAL;
+ ep = kzalloc(sizeof(*ep), GFP_ATOMIC);
+ if (!ep)
+ return -ENOMEM;
+
mux_id = nla_get_u16(data[IFLA_VLAN_ID]);
err = rmnet_register_real_device(real_dev);
@@ -163,7 +143,7 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
goto err0;
port = rmnet_get_port_rtnl(real_dev);
- err = rmnet_vnd_newlink(mux_id, dev, port, real_dev);
+ err = rmnet_vnd_newlink(mux_id, dev, port, real_dev, ep);
if (err)
goto err1;
@@ -177,11 +157,11 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
port->ingress_data_format = ingress_format;
port->rmnet_mode = mode;
- rmnet_set_endpoint_config(real_dev, mux_id, dev);
+ hlist_add_head_rcu(&ep->hlnode, &port->muxed_ep[mux_id]);
return 0;
err2:
- rmnet_vnd_dellink(mux_id, port);
+ rmnet_vnd_dellink(mux_id, port, ep);
err1:
rmnet_unregister_real_device(real_dev, port);
err0:
@@ -191,6 +171,7 @@ static int rmnet_newlink(struct net *src_net, struct net_device *dev,
static void rmnet_dellink(struct net_device *dev, struct list_head *head)
{
struct net_device *real_dev;
+ struct rmnet_endpoint *ep;
struct rmnet_port *port;
u8 mux_id;
@@ -204,8 +185,15 @@ static void rmnet_dellink(struct net_device *dev, struct list_head *head)
port = rmnet_get_port_rtnl(real_dev);
mux_id = rmnet_vnd_get_mux(dev);
- rmnet_vnd_dellink(mux_id, port);
netdev_upper_dev_unlink(dev, real_dev);
+
+ ep = rmnet_get_endpoint(port, mux_id);
+ if (ep) {
+ hlist_del_init_rcu(&ep->hlnode);
+ rmnet_vnd_dellink(mux_id, port, ep);
+ kfree(ep);
+ }
+
rmnet_unregister_real_device(real_dev, port);
unregister_netdevice_queue(dev, head);
@@ -214,11 +202,16 @@ static void rmnet_dellink(struct net_device *dev, struct list_head *head)
static int rmnet_dev_walk_unreg(struct net_device *rmnet_dev, void *data)
{
struct rmnet_walk_data *d = data;
+ struct rmnet_endpoint *ep;
u8 mux_id;
mux_id = rmnet_vnd_get_mux(rmnet_dev);
-
- rmnet_vnd_dellink(mux_id, d->port);
+ ep = rmnet_get_endpoint(d->port, mux_id);
+ if (ep) {
+ hlist_del_init_rcu(&ep->hlnode);
+ rmnet_vnd_dellink(mux_id, d->port, ep);
+ kfree(ep);
+ }
netdev_upper_dev_unlink(rmnet_dev, d->real_dev);
unregister_netdevice_queue(rmnet_dev, d->head);
@@ -316,6 +309,18 @@ struct rmnet_port *rmnet_get_port(struct net_device *real_dev)
return NULL;
}
+struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id)
+{
+ struct rmnet_endpoint *ep;
+
+ hlist_for_each_entry_rcu(ep, &port->muxed_ep[mux_id], hlnode) {
+ if (ep->mux_id == mux_id)
+ return ep;
+ }
+
+ return NULL;
+}
+
/* Startup/Shutdown */
static int __init rmnet_init(void)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index 123ccf4..8849986 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -23,6 +23,7 @@
struct rmnet_endpoint {
u8 mux_id;
struct net_device *egress_dev;
+ struct hlist_node hlnode;
};
/* One instance of this structure is instantiated for each real_dev associated
@@ -30,11 +31,11 @@ struct rmnet_endpoint {
*/
struct rmnet_port {
struct net_device *dev;
- struct rmnet_endpoint muxed_ep[RMNET_MAX_LOGICAL_EP];
u32 ingress_data_format;
u32 egress_data_format;
u8 nr_rmnet_devs;
u8 rmnet_mode;
+ struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
};
extern struct rtnl_link_ops rmnet_link_ops;
@@ -45,5 +46,6 @@ struct rmnet_priv {
};
struct rmnet_port *rmnet_get_port(struct net_device *real_dev);
+struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
#endif /* _RMNET_CONFIG_H_ */
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index e0802d3..fa24ffb 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -71,19 +71,18 @@ static void rmnet_set_skb_proto(struct sk_buff *skb)
& RMNET_INGRESS_FORMAT_MAP_COMMANDS)
return rmnet_map_command(skb, port);
- kfree_skb(skb);
- return RX_HANDLER_CONSUMED;
+ goto free_skb;
}
mux_id = RMNET_MAP_GET_MUX_ID(skb);
len = RMNET_MAP_GET_LENGTH(skb) - RMNET_MAP_GET_PAD(skb);
- if (mux_id >= RMNET_MAX_LOGICAL_EP) {
- kfree_skb(skb);
- return RX_HANDLER_CONSUMED;
- }
+ if (mux_id >= RMNET_MAX_LOGICAL_EP)
+ goto free_skb;
- ep = &port->muxed_ep[mux_id];
+ ep = rmnet_get_endpoint(port, mux_id);
+ if (!ep)
+ goto free_skb;
if (port->ingress_data_format & RMNET_INGRESS_FORMAT_DEMUXING)
skb->dev = ep->egress_dev;
@@ -93,6 +92,10 @@ static void rmnet_set_skb_proto(struct sk_buff *skb)
skb_trim(skb, len);
rmnet_set_skb_proto(skb);
return rmnet_deliver_skb(skb);
+
+free_skb:
+ kfree_skb(skb);
+ return RX_HANDLER_CONSUMED;
}
static rx_handler_result_t
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
index d1ea5e2..74d362f 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
@@ -17,7 +17,7 @@
#include "rmnet_vnd.h"
static u8 rmnet_map_do_flow_control(struct sk_buff *skb,
- struct rmnet_port *rdinfo,
+ struct rmnet_port *port,
int enable)
{
struct rmnet_map_control_command *cmd;
@@ -37,7 +37,7 @@ static u8 rmnet_map_do_flow_control(struct sk_buff *skb,
return RX_HANDLER_CONSUMED;
}
- ep = &rdinfo->muxed_ep[mux_id];
+ ep = rmnet_get_endpoint(port, mux_id);
vnd = ep->egress_dev;
ip_family = cmd->flow_control.ip_family;
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index 8b8497b..1b6747d 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -100,17 +100,19 @@ void rmnet_vnd_setup(struct net_device *rmnet_dev)
int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
struct rmnet_port *port,
- struct net_device *real_dev)
+ struct net_device *real_dev,
+ struct rmnet_endpoint *ep)
{
struct rmnet_priv *priv;
int rc;
- if (port->muxed_ep[id].egress_dev)
+ if (ep->egress_dev)
return -EINVAL;
rc = register_netdevice(rmnet_dev);
if (!rc) {
- port->muxed_ep[id].egress_dev = rmnet_dev;
+ ep->egress_dev = rmnet_dev;
+ ep->mux_id = id;
port->nr_rmnet_devs++;
rmnet_dev->rtnl_link_ops = &rmnet_link_ops;
@@ -125,12 +127,13 @@ int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
return rc;
}
-int rmnet_vnd_dellink(u8 id, struct rmnet_port *port)
+int rmnet_vnd_dellink(u8 id, struct rmnet_port *port,
+ struct rmnet_endpoint *ep)
{
- if (id >= RMNET_MAX_LOGICAL_EP || !port->muxed_ep[id].egress_dev)
+ if (id >= RMNET_MAX_LOGICAL_EP || !ep->egress_dev)
return -EINVAL;
- port->muxed_ep[id].egress_dev = NULL;
+ ep->egress_dev = NULL;
port->nr_rmnet_devs--;
return 0;
}
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
index cae134d..71e4c32 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.h
@@ -19,8 +19,10 @@
int rmnet_vnd_do_flow_control(struct net_device *dev, int enable);
int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
struct rmnet_port *port,
- struct net_device *real_dev);
-int rmnet_vnd_dellink(u8 id, struct rmnet_port *port);
+ struct net_device *real_dev,
+ struct rmnet_endpoint *ep);
+int rmnet_vnd_dellink(u8 id, struct rmnet_port *port,
+ struct rmnet_endpoint *ep);
void rmnet_vnd_rx_fixup(struct sk_buff *skb, struct net_device *dev);
void rmnet_vnd_tx_fixup(struct sk_buff *skb, struct net_device *dev);
u8 rmnet_vnd_get_mux(struct net_device *rmnet_dev);
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH net-next v2 7/7] net: qualcomm: rmnet: Implement bridge mode
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
` (5 preceding siblings ...)
2017-10-12 0:43 ` [PATCH net-next v2 6/7] net: qualcomm: rmnet: Convert the muxed endpoint to hlist Subash Abhinov Kasiviswanathan
@ 2017-10-12 0:43 ` Subash Abhinov Kasiviswanathan
2017-10-12 3:10 ` [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality David Miller
7 siblings, 0 replies; 9+ messages in thread
From: Subash Abhinov Kasiviswanathan @ 2017-10-12 0:43 UTC (permalink / raw)
To: davem, netdev; +Cc: Subash Abhinov Kasiviswanathan
Add support to bridge two devices which can send multiplexing and
aggregation (MAP) data. This is done only when the data itself is
not going to be consumed in the stack but is being passed on to a
different endpoint. This is mainly used for testing.
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c | 93 +++++++++++++++++++++-
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 7 +-
.../net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 26 +++++-
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 2 +
4 files changed, 122 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
index b5fe3f4..71bee1a 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
@@ -109,6 +109,36 @@ static int rmnet_register_real_device(struct net_device *real_dev)
return 0;
}
+static void rmnet_unregister_bridge(struct net_device *dev,
+ struct rmnet_port *port)
+{
+ struct net_device *rmnet_dev, *bridge_dev;
+ struct rmnet_port *bridge_port;
+
+ if (port->rmnet_mode != RMNET_EPMODE_BRIDGE)
+ return;
+
+ /* bridge slave handling */
+ if (!port->nr_rmnet_devs) {
+ rmnet_dev = netdev_master_upper_dev_get_rcu(dev);
+ netdev_upper_dev_unlink(dev, rmnet_dev);
+
+ bridge_dev = port->bridge_ep;
+
+ bridge_port = rmnet_get_port_rtnl(bridge_dev);
+ bridge_port->bridge_ep = NULL;
+ bridge_port->rmnet_mode = RMNET_EPMODE_VND;
+ } else {
+ bridge_dev = port->bridge_ep;
+
+ bridge_port = rmnet_get_port_rtnl(bridge_dev);
+ rmnet_dev = netdev_master_upper_dev_get_rcu(bridge_dev);
+ netdev_upper_dev_unlink(bridge_dev, rmnet_dev);
+
+ rmnet_unregister_real_device(bridge_dev, bridge_port);
+ }
+}
+
static int rmnet_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
@@ -190,10 +220,10 @@ static void rmnet_dellink(struct net_device *dev, struct list_head *head)
ep = rmnet_get_endpoint(port, mux_id);
if (ep) {
hlist_del_init_rcu(&ep->hlnode);
+ rmnet_unregister_bridge(dev, port);
rmnet_vnd_dellink(mux_id, port, ep);
kfree(ep);
}
-
rmnet_unregister_real_device(real_dev, port);
unregister_netdevice_queue(dev, head);
@@ -237,6 +267,8 @@ static void rmnet_force_unassociate_device(struct net_device *dev)
d.port = port;
rcu_read_lock();
+ rmnet_unregister_bridge(dev, port);
+
netdev_walk_all_lower_dev_rcu(real_dev, rmnet_dev_walk_unreg, &d);
rcu_read_unlock();
unregister_netdevice_many(&list);
@@ -321,6 +353,65 @@ struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id)
return NULL;
}
+int rmnet_add_bridge(struct net_device *rmnet_dev,
+ struct net_device *slave_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct rmnet_priv *priv = netdev_priv(rmnet_dev);
+ struct net_device *real_dev = priv->real_dev;
+ struct rmnet_port *port, *slave_port;
+ int err;
+
+ port = rmnet_get_port(real_dev);
+
+ /* If there is more than one rmnet dev attached, its probably being
+ * used for muxing. Skip the briding in that case
+ */
+ if (port->nr_rmnet_devs > 1)
+ return -EINVAL;
+
+ if (rmnet_is_real_dev_registered(slave_dev))
+ return -EBUSY;
+
+ err = rmnet_register_real_device(slave_dev);
+ if (err)
+ return -EBUSY;
+
+ err = netdev_master_upper_dev_link(slave_dev, rmnet_dev, NULL, NULL,
+ extack);
+ if (err)
+ return -EINVAL;
+
+ slave_port = rmnet_get_port(slave_dev);
+ slave_port->rmnet_mode = RMNET_EPMODE_BRIDGE;
+ slave_port->bridge_ep = real_dev;
+
+ port->rmnet_mode = RMNET_EPMODE_BRIDGE;
+ port->bridge_ep = slave_dev;
+
+ netdev_dbg(slave_dev, "registered with rmnet as slave\n");
+ return 0;
+}
+
+int rmnet_del_bridge(struct net_device *rmnet_dev,
+ struct net_device *slave_dev)
+{
+ struct rmnet_priv *priv = netdev_priv(rmnet_dev);
+ struct net_device *real_dev = priv->real_dev;
+ struct rmnet_port *port, *slave_port;
+
+ port = rmnet_get_port(real_dev);
+ port->rmnet_mode = RMNET_EPMODE_VND;
+ port->bridge_ep = NULL;
+
+ netdev_upper_dev_unlink(slave_dev, rmnet_dev);
+ slave_port = rmnet_get_port(slave_dev);
+ rmnet_unregister_real_device(slave_dev, slave_port);
+
+ netdev_dbg(slave_dev, "removed from rmnet as slave\n");
+ return 0;
+}
+
/* Startup/Shutdown */
static int __init rmnet_init(void)
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index 8849986..60115e6 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -36,6 +36,7 @@ struct rmnet_port {
u8 nr_rmnet_devs;
u8 rmnet_mode;
struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
+ struct net_device *bridge_ep;
};
extern struct rtnl_link_ops rmnet_link_ops;
@@ -47,5 +48,9 @@ struct rmnet_priv {
struct rmnet_port *rmnet_get_port(struct net_device *real_dev);
struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
-
+int rmnet_add_bridge(struct net_device *rmnet_dev,
+ struct net_device *slave_dev,
+ struct netlink_ext_ack *extack);
+int rmnet_del_bridge(struct net_device *rmnet_dev,
+ struct net_device *slave_dev);
#endif /* _RMNET_CONFIG_H_ */
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index fa24ffb..df3d2d1 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -149,6 +149,17 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
return RMNET_MAP_SUCCESS;
}
+static rx_handler_result_t
+rmnet_bridge_handler(struct sk_buff *skb, struct net_device *bridge_dev)
+{
+ if (bridge_dev) {
+ skb->dev = bridge_dev;
+ dev_queue_xmit(skb);
+ }
+
+ return RX_HANDLER_CONSUMED;
+}
+
/* Ingress / Egress Entry Points */
/* Processes packet as per ingress data format for receiving device. Logical
@@ -157,10 +168,10 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
*/
rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
{
- struct rmnet_port *port;
+ int rc = RX_HANDLER_CONSUMED;
struct sk_buff *skb = *pskb;
+ struct rmnet_port *port;
struct net_device *dev;
- int rc;
if (!skb)
return RX_HANDLER_CONSUMED;
@@ -168,8 +179,15 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
dev = skb->dev;
port = rmnet_get_port(dev);
- if (port->ingress_data_format & RMNET_INGRESS_FORMAT_MAP)
- rc = rmnet_map_ingress_handler(skb, port);
+ switch (port->rmnet_mode) {
+ case RMNET_EPMODE_VND:
+ if (port->ingress_data_format & RMNET_INGRESS_FORMAT_MAP)
+ rc = rmnet_map_ingress_handler(skb, port);
+ break;
+ case RMNET_EPMODE_BRIDGE:
+ rc = rmnet_bridge_handler(skb, port->bridge_ep);
+ break;
+ }
return rc;
}
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index 1b6747d..12bd0bb 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -74,6 +74,8 @@ static int rmnet_vnd_get_iflink(const struct net_device *dev)
.ndo_start_xmit = rmnet_vnd_start_xmit,
.ndo_change_mtu = rmnet_vnd_change_mtu,
.ndo_get_iflink = rmnet_vnd_get_iflink,
+ .ndo_add_slave = rmnet_add_bridge,
+ .ndo_del_slave = rmnet_del_bridge,
};
/* Called by kernel whenever a new rmnet<n> device is created. Sets MTU,
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
` (6 preceding siblings ...)
2017-10-12 0:43 ` [PATCH net-next v2 7/7] net: qualcomm: rmnet: Implement bridge mode Subash Abhinov Kasiviswanathan
@ 2017-10-12 3:10 ` David Miller
7 siblings, 0 replies; 9+ messages in thread
From: David Miller @ 2017-10-12 3:10 UTC (permalink / raw)
To: subashab; +Cc: netdev
From: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Date: Wed, 11 Oct 2017 18:43:51 -0600
> This series fixes some of the broken rmnet functionality.
> Bridge mode is re-written and made useable and the muxed_ep is converted to hlist.
>
> Patches 1-5 are cleanups in preparation for these changes.
> Patch 6 does the hlist conversion.
> Patch 7 has the implementation of the rmnet bridge mode.
>
> v1->v2: Fix the warning and code style issue in rmnet_rx_handler as
> mentioned by David.
This looks better, series applied, thanks!
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2017-10-12 3:13 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-10-12 0:43 [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 1/7] net: qualcomm: rmnet: Remove existing logic for bridge mode Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 2/7] net: qualcomm: rmnet: Remove some unused defines Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 3/7] net: qualcomm: rmnet: Move rmnet_mode to rmnet_port Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 4/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet private info Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 5/7] net: qualcomm: rmnet: Remove duplicate setting of rmnet_devices Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 6/7] net: qualcomm: rmnet: Convert the muxed endpoint to hlist Subash Abhinov Kasiviswanathan
2017-10-12 0:43 ` [PATCH net-next v2 7/7] net: qualcomm: rmnet: Implement bridge mode Subash Abhinov Kasiviswanathan
2017-10-12 3:10 ` [PATCH net-next v2 0/7] net: qualcomm: rmnet: Rewrite some existing functionality David Miller
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