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net: ipv4: Plumb extack through route add functions

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Plumb extack argument down to route add functions.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2017-05-21 10:12:02 -06:00
committed by David S. Miller
parent 863483c970
commit 6d8422a175
5 changed files with 28 additions and 20 deletions
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22
net/ipv4/fib_semantics.c
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@@ -454,7 +454,8 @@ static int fib_detect_death(struct fib_info *fi, int order,
#ifdef CONFIG_IP_ROUTE_MULTIPATH
static int fib_count_nexthops(struct rtnexthop *rtnh, int remaining)
static int fib_count_nexthops(struct rtnexthop *rtnh, int remaining,
struct netlink_ext_ack *extack)
{
int nhs = 0;
@@ -468,7 +469,8 @@ static int fib_count_nexthops(struct rtnexthop *rtnh, int remaining)
}
static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
int remaining, struct fib_config *cfg)
int remaining, struct fib_config *cfg,
struct netlink_ext_ack *extack)
{
int ret;
@@ -714,7 +716,7 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
* |-> {local prefix} (terminal node)
*/
static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
struct fib_nh *nh)
struct fib_nh *nh, struct netlink_ext_ack *extack)
{
int err = 0;
struct net *net;
@@ -797,7 +799,6 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
if (nh->nh_flags & (RTNH_F_PERVASIVE | RTNH_F_ONLINK))
return -EINVAL;
rcu_read_lock();
err = -ENODEV;
in_dev = inetdev_by_index(net, nh->nh_oif);
@@ -980,7 +981,8 @@ fib_convert_metrics(struct fib_info *fi, const struct fib_config *cfg)
return 0;
}
struct fib_info *fib_create_info(struct fib_config *cfg)
struct fib_info *fib_create_info(struct fib_config *cfg,
struct netlink_ext_ack *extack)
{
int err;
struct fib_info *fi = NULL;
@@ -1000,7 +1002,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
#ifdef CONFIG_IP_ROUTE_MULTIPATH
if (cfg->fc_mp) {
nhs = fib_count_nexthops(cfg->fc_mp, cfg->fc_mp_len);
nhs = fib_count_nexthops(cfg->fc_mp, cfg->fc_mp_len, extack);
if (nhs == 0)
goto err_inval;
}
@@ -1062,7 +1064,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
if (cfg->fc_mp) {
#ifdef CONFIG_IP_ROUTE_MULTIPATH
err = fib_get_nhs(fi, cfg->fc_mp, cfg->fc_mp_len, cfg);
err = fib_get_nhs(fi, cfg->fc_mp, cfg->fc_mp_len, cfg, extack);
if (err != 0)
goto failure;
if (cfg->fc_oif && fi->fib_nh->nh_oif != cfg->fc_oif)
@@ -1129,7 +1131,9 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
struct fib_nh *nh = fi->fib_nh;
/* Local address is added. */
if (nhs != 1 || nh->nh_gw)
if (nhs != 1)
goto err_inval;
if (nh->nh_gw)
goto err_inval;
nh->nh_scope = RT_SCOPE_NOWHERE;
nh->nh_dev = dev_get_by_index(net, fi->fib_nh->nh_oif);
@@ -1140,7 +1144,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
int linkdown = 0;
change_nexthops(fi) {
err = fib_check_nh(cfg, fi, nexthop_nh);
err = fib_check_nh(cfg, fi, nexthop_nh, extack);
if (err != 0)
goto failure;
if (nexthop_nh->nh_flags & RTNH_F_LINKDOWN)