Hi all,
I created a patch of RAW socket.
This patch adds ip6_sk_dst_lookup()/ip6_dst_store() in rawv6_sendmsg().
so that RAW socket can use "daddr_cache".
When RAW socket sent the packets to same destination,
it must reduce over-head.
Could you please check the following patch?
Regards,
Naohiro Ooiwa
Signed-off-by: Naohiro Ooiwa
---
net/ipv6/raw.c | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 396f0ea..58c5e25 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -858,7 +858,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
fl.oif = np->mcast_oif;
security_sk_classify_flow(sk, &fl);
- err = ip6_dst_lookup(sk, &dst, &fl);
+ err = ip6_sk_dst_lookup(sk, &dst, &fl);
if (err)
goto out;
if (final_p)
@@ -905,7 +905,17 @@ back_from_confirm:
release_sock(sk);
}
done:
- dst_release(dst);
+ if (dst)
+ ip6_dst_store(sk, dst,
+ ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ?
+ &np->daddr : NULL,
+#ifdef CONFIG_IPV6_SUBTREES
+ ipv6_addr_equal(&fl.fl6_src, &np->saddr) ?
+ &np->saddr :
+#endif
+ NULL);
+ else
+ dst_release(dst);
out:
fl6_sock_release(flowlabel);
return err<0?err:len;
--
--
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