diff options
Diffstat (limited to 'net/ipv4/fib_semantics.c')
| -rw-r--r-- | net/ipv4/fib_semantics.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index e63b8a98fb4..2f1fdae6efa 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -85,12 +85,12 @@ for (nhsel=0; nhsel < 1; nhsel++) #define endfor_nexthops(fi) } -static const struct +static const struct { int error; u8 scope; } fib_props[RTA_MAX + 1] = { - { + { .error = 0, .scope = RT_SCOPE_NOWHERE, }, /* RTN_UNSPEC */ @@ -314,9 +314,12 @@ void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, err = fib_dump_info(skb, info->pid, seq, event, tb_id, fa->fa_type, fa->fa_scope, key, dst_len, fa->fa_tos, fa->fa_info, 0); - /* failure implies BUG in fib_nlmsg_size() */ - BUG_ON(err < 0); - + if (err < 0) { + /* -EMSGSIZE implies BUG in fib_nlmsg_size() */ + WARN_ON(err == -EMSGSIZE); + kfree_skb(skb); + goto errout; + } err = rtnl_notify(skb, info->pid, RTNLGRP_IPV4_ROUTE, info->nlh, GFP_KERNEL); errout: @@ -436,7 +439,7 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi) rtnh = cfg->fc_mp; remaining = cfg->fc_mp_len; - + for_nexthops(fi) { int attrlen; @@ -505,9 +508,9 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi) Normally it looks as following. {universe prefix} -> (gw, oif) [scope link] - | + | |-> {link prefix} -> (gw, oif) [scope local] - | + | |-> {local prefix} (terminal node) */ @@ -861,7 +864,7 @@ err_inval: err = -EINVAL; failure: - if (fi) { + if (fi) { fi->fib_dead = 1; free_fib_info(fi); } @@ -960,7 +963,7 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, nlh = nlmsg_put(skb, pid, seq, event, sizeof(*rtm), flags); if (nlh == NULL) - return -ENOBUFS; + return -EMSGSIZE; rtm = nlmsg_data(nlh); rtm->rtm_family = AF_INET; @@ -1031,7 +1034,8 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, return nlmsg_end(skb, nlh); nla_put_failure: - return nlmsg_cancel(skb, nlh); + nlmsg_cancel(skb, nlh); + return -EMSGSIZE; } /* @@ -1045,7 +1049,7 @@ int fib_sync_down(__be32 local, struct net_device *dev, int force) { int ret = 0; int scope = RT_SCOPE_NOWHERE; - + if (force) scope = -1; |