netdev - [PATCH net-next] nfp: flower: Allow ipv6gretap interface for offloading

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Date:   Fri, 29 Oct 2021 17:04:29 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, oss-drivers@...igine.com,
        Yu Xiao <yu.xiao@...igine.com>,
        Louis Peens <louis.peens@...igine.com>,
        Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net-next] nfp: flower: Allow ipv6gretap interface for offloading

From: Yu Xiao <yu.xiao@...igine.com>

The tunnel_type check only allows for "netif_is_gretap", but for
OVS the port is actually "netif_is_ip6gretap" when setting up GRE
for ipv6, which means offloading request was rejected before.

Therefore, adding "netif_is_ip6gretap" allow ipv6gretap interface
for offloading.

Signed-off-by: Yu Xiao <yu.xiao@...igine.com>
Signed-off-by: Louis Peens <louis.peens@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
---
 drivers/net/ethernet/netronome/nfp/flower/action.c  | 3 ++-
 drivers/net/ethernet/netronome/nfp/flower/cmsg.h    | 2 +-
 drivers/net/ethernet/netronome/nfp/flower/offload.c | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c
index 2a432de11858..a3242b36e216 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/action.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/action.c
@@ -272,7 +272,8 @@ nfp_flower_tun_is_gre(struct flow_rule *rule, int start_idx)
 	for (act_idx = start_idx + 1; act_idx < num_act; act_idx++)
 		if (act[act_idx].id == FLOW_ACTION_REDIRECT ||
 		    act[act_idx].id == FLOW_ACTION_MIRRED)
-			return netif_is_gretap(act[act_idx].dev);
+			return netif_is_gretap(act[act_idx].dev) ||
+			       netif_is_ip6gretap(act[act_idx].dev);
 
 	return false;
 }
diff --git a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
index a2926b1b3cff..784292b16290 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
@@ -703,7 +703,7 @@ nfp_fl_netdev_is_tunnel_type(struct net_device *netdev,
 {
 	if (netif_is_vxlan(netdev))
 		return tun_type == NFP_FL_TUNNEL_VXLAN;
-	if (netif_is_gretap(netdev))
+	if (netif_is_gretap(netdev) || netif_is_ip6gretap(netdev))
 		return tun_type == NFP_FL_TUNNEL_GRE;
 	if (netif_is_geneve(netdev))
 		return tun_type == NFP_FL_TUNNEL_GENEVE;
diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c
index 64c0ef57ad42..224089d04d98 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/offload.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c
@@ -360,7 +360,7 @@ nfp_flower_calculate_key_layers(struct nfp_app *app,
 
 		if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
 			/* check if GRE, which has no enc_ports */
-			if (!netif_is_gretap(netdev)) {
+			if (!netif_is_gretap(netdev) && !netif_is_ip6gretap(netdev)) {
 				NL_SET_ERR_MSG_MOD(extack, "unsupported offload: an exact match on L4 destination port is required for non-GRE tunnels");
 				return -EOPNOTSUPP;
 			}
-- 
2.20.1