From 37e826c513883099c298317bad1b3b677b2905fb Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 24 Mar 2011 18:06:47 -0700 Subject: ipv4: Fix nexthop caching wrt. scoping. Move the scope value out of the fib alias entries and into fib_info, so that we always use the correct scope when recomputing the nexthop cached source address. Reported-by: Julian Anastasov Signed-off-by: David S. Miller --- net/ipv4/fib_semantics.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'net/ipv4/fib_semantics.c') diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 2d4bebca671a..641a5a2a9f9c 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -222,7 +222,7 @@ static inline unsigned int fib_info_hashfn(const struct fib_info *fi) unsigned int mask = (fib_info_hash_size - 1); unsigned int val = fi->fib_nhs; - val ^= fi->fib_protocol; + val ^= (fi->fib_protocol << 8) | fi->fib_scope; val ^= (__force u32)fi->fib_prefsrc; val ^= fi->fib_priority; for_nexthops(fi) { @@ -248,6 +248,7 @@ static struct fib_info *fib_find_info(const struct fib_info *nfi) if (fi->fib_nhs != nfi->fib_nhs) continue; if (nfi->fib_protocol == fi->fib_protocol && + nfi->fib_scope == fi->fib_scope && nfi->fib_prefsrc == fi->fib_prefsrc && nfi->fib_priority == fi->fib_priority && memcmp(nfi->fib_metrics, fi->fib_metrics, @@ -328,7 +329,7 @@ void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, goto errout; err = fib_dump_info(skb, info->pid, seq, event, tb_id, - fa->fa_type, fa->fa_scope, key, dst_len, + fa->fa_type, key, dst_len, fa->fa_tos, fa->fa_info, nlm_flags); if (err < 0) { /* -EMSGSIZE implies BUG in fib_nlmsg_size() */ @@ -699,7 +700,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh) { nh->nh_saddr = inet_select_addr(nh->nh_dev, nh->nh_gw, - nh->nh_cfg_scope); + nh->nh_parent->fib_scope); nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid); return nh->nh_saddr; @@ -763,6 +764,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg) fi->fib_net = hold_net(net); fi->fib_protocol = cfg->fc_protocol; + fi->fib_scope = cfg->fc_scope; fi->fib_flags = cfg->fc_flags; fi->fib_priority = cfg->fc_priority; fi->fib_prefsrc = cfg->fc_prefsrc; @@ -864,7 +866,6 @@ struct fib_info *fib_create_info(struct fib_config *cfg) } change_nexthops(fi) { - nexthop_nh->nh_cfg_scope = cfg->fc_scope; fib_info_update_nh_saddr(net, nexthop_nh); } endfor_nexthops(fi) @@ -914,7 +915,7 @@ failure: } int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, - u32 tb_id, u8 type, u8 scope, __be32 dst, int dst_len, u8 tos, + u32 tb_id, u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi, unsigned int flags) { struct nlmsghdr *nlh; @@ -936,7 +937,7 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, NLA_PUT_U32(skb, RTA_TABLE, tb_id); rtm->rtm_type = type; rtm->rtm_flags = fi->fib_flags; - rtm->rtm_scope = scope; + rtm->rtm_scope = fi->fib_scope; rtm->rtm_protocol = fi->fib_protocol; if (rtm->rtm_dst_len) @@ -1092,7 +1093,7 @@ void fib_select_default(struct fib_result *res) list_for_each_entry_rcu(fa, fa_head, fa_list) { struct fib_info *next_fi = fa->fa_info; - if (fa->fa_scope != res->scope || + if (next_fi->fib_scope != res->scope || fa->fa_type != RTN_UNICAST) continue; -- cgit v1.2.3