This is a note to let you know that I've just added the patch titled
nfp: flower: fix unsupported pre_tunnel flows
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfp-flower-fix-unsupported-pre_tunnel-flows.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9fff89ea5570f0cb5eb964e89822f46b9945b8ff
Author: Louis Peens <louis.peens@xxxxxxxxxxxx>
Date: Tue Mar 16 19:13:08 2021 +0100
nfp: flower: fix unsupported pre_tunnel flows
[ Upstream commit 982e5ee23d764fe6158f67a7813d416335e978b0 ]
There are some pre_tunnel flows combinations which are incorrectly being
offloaded without proper support, fix these.
- Matching on MPLS is not supported for pre_tun.
- Match on IPv4/IPv6 layer must be present.
- Destination MAC address must match pre_tun.dev MAC
Fixes: 120ffd84a9ec ("nfp: flower: verify pre-tunnel rules")
Signed-off-by: Louis Peens <louis.peens@xxxxxxxxxxxx>
Signed-off-by: Simon Horman <simon.horman@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c
index 1c59aff2163c..d72225d64a75 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/offload.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c
@@ -1142,6 +1142,12 @@ nfp_flower_validate_pre_tun_rule(struct nfp_app *app,
return -EOPNOTSUPP;
}
+ if (!(key_layer & NFP_FLOWER_LAYER_IPV4) &&
+ !(key_layer & NFP_FLOWER_LAYER_IPV6)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: match on ipv4/ipv6 eth_type must be present");
+ return -EOPNOTSUPP;
+ }
+
/* Skip fields known to exist. */
mask += sizeof(struct nfp_flower_meta_tci);
ext += sizeof(struct nfp_flower_meta_tci);
@@ -1152,6 +1158,13 @@ nfp_flower_validate_pre_tun_rule(struct nfp_app *app,
mask += sizeof(struct nfp_flower_in_port);
ext += sizeof(struct nfp_flower_in_port);
+ /* Ensure destination MAC address matches pre_tun_dev. */
+ mac = (struct nfp_flower_mac_mpls *)ext;
+ if (memcmp(&mac->mac_dst[0], flow->pre_tun_rule.dev->dev_addr, 6)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: dest MAC must match output dev MAC");
+ return -EOPNOTSUPP;
+ }
+
/* Ensure destination MAC address is fully matched. */
mac = (struct nfp_flower_mac_mpls *)mask;
if (!is_broadcast_ether_addr(&mac->mac_dst[0])) {
@@ -1159,6 +1172,11 @@ nfp_flower_validate_pre_tun_rule(struct nfp_app *app,
return -EOPNOTSUPP;
}
+ if (mac->mpls_lse) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: MPLS not supported");
+ return -EOPNOTSUPP;
+ }
+
mask += sizeof(struct nfp_flower_mac_mpls);
ext += sizeof(struct nfp_flower_mac_mpls);
if (key_layer & NFP_FLOWER_LAYER_IPV4 ||
