From: Roopa Prabhu <ro...@cumulusnetworks.com>
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 <ro...@cumulusnetworks.com>
---
net/ipv4/fib_trie.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 3c699c4..38ffc20 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -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 fib_alias *fa, *new_fa;
struct key_vector *l, *tp;
+ unsigned int nlflags = 0;
struct fib_info *fi;
u8 plen = cfg->fc_dst_len;
u8 slen = KEYLENGTH - plen;
@@ -1203,6 +1204,8 @@ int fib_table_insert(struct fib_table *tb, struct
fib_config *cfg)
if (!(cfg->fc_nlflags & NLM_F_APPEND))
fa = fa_first;
+ else
+ nlflags |= NLM_F_APPEND;
}
err = -ENOENT;
if (!(cfg->fc_nlflags & NLM_F_CREATE))
@@ -1238,7 +1241,7 @@ int fib_table_insert(struct fib_table *tb, struct
fib_config *cfg)
rt_cache_flush(cfg->fc_nlinfo.nl_net);
rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, new_fa->tb_id,
- &cfg->fc_nlinfo, 0);
+ &cfg->fc_nlinfo, nlflags);
succeeded:
return 0;
--
1.7.10.4
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