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| author | Mitsuru KANDA <mk@linux-ipv6.org> | 2005-09-18 00:30:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-09-18 00:30:08 -0700 |
| commit | 987905ded3d19c196dae25cac46c569cac9594b8 (patch) | |
| tree | 2a4b28b00e11ad15386dd9d5559e7be871e83ee2 /net/ipv6/udp.c | |
| parent | 40abc27066c49b2c13c817154d438431b0303b96 (diff) | |
| download | lwn-987905ded3d19c196dae25cac46c569cac9594b8.tar.gz lwn-987905ded3d19c196dae25cac46c569cac9594b8.zip | |
[IPV6]: Check connect(2) status for IPv6 UDP socket (Re: xfrm_lookup)
I think we should cache the per-socket route(dst_entry) only when the
IPv6 UDP socket is connect(2)'ed.
(which is same as IPv4 UDP send behavior)
Signed-off-by: Mitsuru KANDA <mk@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 2b9bf9bd177f..6001948600f3 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -639,6 +639,7 @@ static int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk, int tclass = -1; int corkreq = up->corkflag || msg->msg_flags&MSG_MORE; int err; + int connected = 0; /* destination address check */ if (sin6) { @@ -748,6 +749,7 @@ do_udp_sendmsg: fl->fl_ip_dport = inet->dport; daddr = &np->daddr; fl->fl6_flowlabel = np->flow_label; + connected = 1; } if (!fl->oif) @@ -770,6 +772,7 @@ do_udp_sendmsg: } if (!(opt->opt_nflen|opt->opt_flen)) opt = NULL; + connected = 0; } if (opt == NULL) opt = np->opt; @@ -787,10 +790,13 @@ do_udp_sendmsg: ipv6_addr_copy(&final, &fl->fl6_dst); ipv6_addr_copy(&fl->fl6_dst, rt0->addr); final_p = &final; + connected = 0; } - if (!fl->oif && ipv6_addr_is_multicast(&fl->fl6_dst)) + if (!fl->oif && ipv6_addr_is_multicast(&fl->fl6_dst)) { fl->oif = np->mcast_oif; + connected = 0; + } err = ip6_dst_lookup(sk, &dst, fl); if (err) @@ -846,7 +852,7 @@ do_append_data: else if (!corkreq) err = udp_v6_push_pending_frames(sk, up); - if (dst) + if (dst && connected) ip6_dst_store(sk, dst, ipv6_addr_equal(&fl->fl6_dst, &np->daddr) ? &np->daddr : NULL); |