diff options
author | Guillaume Nault <gnault@redhat.com> | 2022-01-10 16:43:11 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 12:54:33 +0300 |
commit | 7b9d40e9f60d3fdc2a130b943223308c338fc49d (patch) | |
tree | 1ff95df87ce735d2854b64dfbbe76588952611a2 | |
parent | cd5c24d2230f418159d46766b2705a6058cf8650 (diff) | |
download | linux-7b9d40e9f60d3fdc2a130b943223308c338fc49d.tar.xz |
libcxgb: Don't accidentally set RTO_ONLINK in cxgb_find_route()
commit a915deaa9abe4fb3a440312c954253a6a733608e upstream.
Mask the ECN bits before calling ip_route_output_ports(). The tos
variable might be passed directly from an IPv4 header, so it may have
the last ECN bit set. This interferes with the route lookup process as
ip_route_output_key_hash() interpretes this bit specially (to restrict
the route scope).
Found by code inspection, compile tested only.
Fixes: 804c2f3e36ef ("libcxgb,iw_cxgb4,cxgbit: add cxgb_find_route()")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c index d04a6c163445..da8d10475a08 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c @@ -32,6 +32,7 @@ #include <linux/tcp.h> #include <linux/ipv6.h> +#include <net/inet_ecn.h> #include <net/route.h> #include <net/ip6_route.h> @@ -99,7 +100,7 @@ cxgb_find_route(struct cxgb4_lld_info *lldi, rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, peer_port, local_port, IPPROTO_TCP, - tos, 0); + tos & ~INET_ECN_MASK, 0); if (IS_ERR(rt)) return NULL; n = dst_neigh_lookup(&rt->dst, &peer_ip); |