diff options
| author | Xin Long <lucien.xin@gmail.com> | 2017-05-08 15:04:04 +0800 |
|---|---|---|
| committer | Jiri Pirko <jiri@mellanox.com> | 2017-05-08 09:55:37 +0200 |
| commit | 9a9fbff3e75f78cbff76e9dbd1cfa0a05fd1f120 (patch) | |
| tree | e16089cb49b5d30deed0f86834f5d0869ac244c4 | |
| parent | 3d1e9efa37976fce3546e343a948a582da1dd203 (diff) | |
| download | libteam-9a9fbff3e75f78cbff76e9dbd1cfa0a05fd1f120.tar.gz | |
teamd: check ipv6 packet only with the 4 bits version
Now in lw_nsnap_receive, it checks if the packet is ipv6 or not by
ip6h.ip6_vfc != 0x60. But ip6_vfc in ipv6 header is 4 bits version
and top 4 bits tclass.
The na packet from some switch may set this top 4 bits tclass. It
will cause to fail to validate the ipv6 na packet, and nsna_ping
couldn't work.
This patch is to fix it by only using the 4 bits version to check
ipv6 packet.
Reported-by: Amit Supugade <asupugad@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
| -rw-r--r-- | teamd/teamd_lw_nsna_ping.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/teamd/teamd_lw_nsna_ping.c b/teamd/teamd_lw_nsna_ping.c index 1be8323..4f5dfcd 100644 --- a/teamd/teamd_lw_nsna_ping.c +++ b/teamd/teamd_lw_nsna_ping.c @@ -247,7 +247,7 @@ static int lw_nsnap_receive(struct lw_psr_port_priv *psr_ppriv) return err; /* check IPV6 header */ - if (nap.ip6h.ip6_vfc != 0x60 /* IPV6 */ || + if ((nap.ip6h.ip6_vfc & 0xf0) != 0x60 /* IPV6 */ || nap.ip6h.ip6_plen != htons(sizeof(nap) - sizeof(nap.ip6h)) || nap.ip6h.ip6_nxt != IPPROTO_ICMPV6 || nap.ip6h.ip6_hlim != 255 /* Do not route */ || |