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ipv4: include NLM_F_APPEND flag in append route notifications 

This patch adds NLM_F_APPEND flag to struct nlmsg_hdr->nlmsg_flags
in newroute notifications if the route add was an append.
(This is similar to how NLM_F_REPLACE is already part of new
route replace notifications today)

This helps userspace determine if the route add operation was
an append.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu 2015-06-17 11:07:01 -07:00 committed by David S. Miller
parent b42be38b27
commit a2bb6d7d6f
1 changed files with 5 additions and 2 deletions
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7
net/ipv4/fib_trie.c
View File

@ -1082,6 +1082,7 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
struct trie *t = (struct trie *)tb->tb_data; struct trie *t = (struct trie *)tb->tb_data;
struct fib_alias *fa, *new_fa; struct fib_alias *fa, *new_fa;
struct key_vector *l, *tp; struct key_vector *l, *tp;
unsigned int nlflags = 0;
struct fib_info *fi; struct fib_info *fi;
u8 plen = cfg->fc_dst_len; u8 plen = cfg->fc_dst_len;
u8 slen = KEYLENGTH - plen; u8 slen = KEYLENGTH - plen;
@ -1201,7 +1202,9 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
if (fa_match) if (fa_match)
goto out; goto out;
if (!(cfg->fc_nlflags & NLM_F_APPEND)) if (cfg->fc_nlflags & NLM_F_APPEND)
nlflags = NLM_F_APPEND;
else
fa = fa_first; fa = fa_first;
} }
err = -ENOENT; err = -ENOENT;
@ -1238,7 +1241,7 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
rt_cache_flush(cfg->fc_nlinfo.nl_net); rt_cache_flush(cfg->fc_nlinfo.nl_net);
rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, new_fa->tb_id, rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, new_fa->tb_id,
&cfg->fc_nlinfo, 0); &cfg->fc_nlinfo, nlflags);
succeeded: succeeded:
return 0; return 0;