diff options
| author | Guillaume Nault <gnault@redhat.com> | 2022-01-10 16:43:14 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-01-12 07:36:09 +0300 |
| commit | 48d67543e01d73292e0bb66d3f10fc422e79e031 (patch) | |
| tree | 1feb789d12c940e8830d761159c9c7d5f625f603 | |
| parent | a915deaa9abe4fb3a440312c954253a6a733608e (diff) | |
| download | linux-48d67543e01d73292e0bb66d3f10fc422e79e031.tar.xz | |
mlx5: Don't accidentally set RTO_ONLINK before mlx5e_route_lookup_ipv4_get()
Mask the ECN bits before calling mlx5e_route_lookup_ipv4_get(). The
tunnel key might 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: c7b9038d8af6 ("net/mlx5e: TC preparation refactoring for routing update event")
Fixes: 9a941117fb76 ("net/mlx5e: Maximize ip tunnel key usage on the TC offloading path")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c index 33815246fead..378fc8e3bd97 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* Copyright (c) 2018 Mellanox Technologies. */ +#include <net/inet_ecn.h> #include <net/vxlan.h> #include <net/gre.h> #include <net/geneve.h> @@ -235,7 +236,7 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv, int err; /* add the IP fields */ - attr.fl.fl4.flowi4_tos = tun_key->tos; + attr.fl.fl4.flowi4_tos = tun_key->tos & ~INET_ECN_MASK; attr.fl.fl4.daddr = tun_key->u.ipv4.dst; attr.fl.fl4.saddr = tun_key->u.ipv4.src; attr.ttl = tun_key->ttl; @@ -350,7 +351,7 @@ int mlx5e_tc_tun_update_header_ipv4(struct mlx5e_priv *priv, int err; /* add the IP fields */ - attr.fl.fl4.flowi4_tos = tun_key->tos; + attr.fl.fl4.flowi4_tos = tun_key->tos & ~INET_ECN_MASK; attr.fl.fl4.daddr = tun_key->u.ipv4.dst; attr.fl.fl4.saddr = tun_key->u.ipv4.src; attr.ttl = tun_key->ttl; |