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Date: Mon, 9 Mar 2015 13:59:09 -0700
From: sfeldma@...il.com
To: netdev@...r.kernel.org
Cc: jiri@...nulli.us, jhs@...atatu.com, roopa@...ulusnetworks.com
Subject: [PATCH net-next] switchdev: add netlink flags to IPv4 FIB add op
From: Scott Feldman <sfeldma@...il.com>
Pass in the netlink flags (NLM_F_*) into switchdev driver for IPv4 FIB add op
to allow driver to 1) optimize hardware updates, 2) handle ip route prepend
and append commands correctly.
Suggested-by: Jamal Hadi Salim <jhs@...atatu.com>
Suggested-by: Roopa Prabhu <roopa@...ulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@...il.com>
---
drivers/net/ethernet/rocker/rocker.c | 3 ++-
include/linux/netdevice.h | 3 ++-
include/net/switchdev.h | 6 ++++--
net/ipv4/fib_trie.c | 5 ++++-
net/switchdev/switchdev.c | 7 +++++--
5 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index 65e1403..223348d 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -4152,7 +4152,8 @@ static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
static int rocker_port_switch_fib_ipv4_add(struct net_device *dev,
__be32 dst, int dst_len,
struct fib_info *fi,
- u8 tos, u8 type, u32 tb_id)
+ u8 tos, u8 type,
+ u32 nlflags, u32 tb_id)
{
struct rocker_port *rocker_port = netdev_priv(dev);
int flags = 0;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 4541378..1354ae8 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1035,7 +1035,7 @@ struct fib_info;
* state change.
* int (*ndo_sw_parent_fib_ipv4_add)(struct net_device *dev, __be32 dst,
* int dst_len, struct fib_info *fi,
- * u8 tos, u8 type, u32 tb_id);
+ * u8 tos, u8 type, u32 nlflags, u32 tb_id);
* Called to add/modify IPv4 route to switch device.
* int (*ndo_sw_parent_fib_ipv4_del)(struct net_device *dev, __be32 dst,
* int dst_len, struct fib_info *fi,
@@ -1207,6 +1207,7 @@ struct net_device_ops {
int dst_len,
struct fib_info *fi,
u8 tos, u8 type,
+ u32 nlflags,
u32 tb_id);
int (*ndo_switch_fib_ipv4_del)(struct net_device *dev,
__be32 dst,
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 933fac4..1a9382f 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -1,6 +1,7 @@
/*
* include/net/switchdev.h - Switch device API
* Copyright (c) 2014 Jiri Pirko <jiri@...nulli.us>
+ * Copyright (c) 2014-2015 Scott Feldman <sfeldma@...il.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -52,7 +53,7 @@ int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
struct nlmsghdr *nlh, u16 flags);
int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
- u8 tos, u8 type, u32 tb_id);
+ u8 tos, u8 type, u32 nlflags, u32 tb_id);
int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 tb_id);
void netdev_switch_fib_ipv4_abort(struct fib_info *fi);
@@ -117,7 +118,8 @@ static inline int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *
static inline int netdev_switch_fib_ipv4_add(u32 dst, int dst_len,
struct fib_info *fi,
- u8 tos, u8 type, u32 tb_id)
+ u8 tos, u8 type,
+ u32 nlflags, u32 tb_id)
{
return 0;
}
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 9095545..fcfa982 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1155,6 +1155,7 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
err = netdev_switch_fib_ipv4_add(key, plen, fi,
new_fa->fa_tos,
cfg->fc_type,
+ cfg->fc_nlflags,
tb->tb_id);
if (err) {
netdev_switch_fib_ipv4_abort(fi);
@@ -1201,7 +1202,9 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
/* (Optionally) offload fib entry to switch hardware. */
err = netdev_switch_fib_ipv4_add(key, plen, fi, tos,
- cfg->fc_type, tb->tb_id);
+ cfg->fc_type,
+ cfg->fc_nlflags,
+ tb->tb_id);
if (err) {
netdev_switch_fib_ipv4_abort(fi);
goto out_free_new_fa;
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 19e4e72..c9f6200 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -1,6 +1,7 @@
/*
* net/switchdev/switchdev.c - Switch device API
* Copyright (c) 2014 Jiri Pirko <jiri@...nulli.us>
+ * Copyright (c) 2014-2015 Scott Feldman <sfeldma@...il.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -294,12 +295,13 @@ static struct net_device *netdev_switch_get_dev_by_nhs(struct fib_info *fi)
* @fi: route FIB info structure
* @tos: route TOS
* @type: route type
+ * @nlflags: netlink flags passed in (NLM_F_*)
* @tb_id: route table ID
*
* Add IPv4 route entry to switch device.
*/
int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
- u8 tos, u8 type, u32 tb_id)
+ u8 tos, u8 type, u32 nlflags, u32 tb_id)
{
struct net_device *dev;
const struct net_device_ops *ops;
@@ -324,7 +326,8 @@ int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
if (ops->ndo_switch_fib_ipv4_add) {
err = ops->ndo_switch_fib_ipv4_add(dev, htonl(dst), dst_len,
- fi, tos, type, tb_id);
+ fi, tos, type, nlflags,
+ tb_id);
if (!err)
fi->fib_flags |= RTNH_F_EXTERNAL;
}
--
1.7.10.4
--
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