diff options
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c index 92a311767381..647c86ae343d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c @@ -147,6 +147,19 @@ static void cxgb4_process_flow_match(struct net_device *dev, fs->mask.fport = cpu_to_be16(mask->src); } + if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_IP)) { + struct flow_dissector_key_ip *key, *mask; + + key = skb_flow_dissector_target(cls->dissector, + FLOW_DISSECTOR_KEY_IP, + cls->key); + mask = skb_flow_dissector_target(cls->dissector, + FLOW_DISSECTOR_KEY_IP, + cls->mask); + fs->val.tos = key->tos; + fs->mask.tos = mask->tos; + } + /* Match only packets coming from the ingress port where this * filter will be created. */ @@ -157,16 +170,52 @@ static void cxgb4_process_flow_match(struct net_device *dev, static int cxgb4_validate_flow_match(struct net_device *dev, struct tc_cls_flower_offload *cls) { + u16 ethtype_mask = 0; + u16 ethtype_key = 0; + if (cls->dissector->used_keys & ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | BIT(FLOW_DISSECTOR_KEY_BASIC) | BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | - BIT(FLOW_DISSECTOR_KEY_PORTS))) { + BIT(FLOW_DISSECTOR_KEY_PORTS) | + BIT(FLOW_DISSECTOR_KEY_IP))) { netdev_warn(dev, "Unsupported key used: 0x%x\n", cls->dissector->used_keys); return -EOPNOTSUPP; } + + if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_BASIC)) { + struct flow_dissector_key_basic *key = + skb_flow_dissector_target(cls->dissector, + FLOW_DISSECTOR_KEY_BASIC, + cls->key); + struct flow_dissector_key_basic *mask = + skb_flow_dissector_target(cls->dissector, + FLOW_DISSECTOR_KEY_BASIC, + cls->mask); + ethtype_key = ntohs(key->n_proto); + ethtype_mask = ntohs(mask->n_proto); + } + + if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_IP)) { + u16 eth_ip_type = ethtype_key & ethtype_mask; + struct flow_dissector_key_ip *mask; + + if (eth_ip_type != ETH_P_IP && eth_ip_type != ETH_P_IPV6) { + netdev_err(dev, "IP Key supported only with IPv4/v6"); + return -EINVAL; + } + + mask = skb_flow_dissector_target(cls->dissector, + FLOW_DISSECTOR_KEY_IP, + cls->mask); + if (mask->ttl) { + netdev_warn(dev, "ttl match unsupported for offload"); + return -EOPNOTSUPP; + } + } + return 0; } |