patch 'net/mlx5: fix IP-in-IP tunnels recognition' has been queued to stable release 22.11.5

luca.boccassi at gmail.com luca.boccassi at gmail.com
Mon Mar 18 16:39:10 CET 2024


Hi,

FYI, your patch has been queued to stable release 22.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/20/24. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/fd3721be47bb39a9b67467e97a848d4b493bd1bd

Thanks.

Luca Boccassi

---
>From fd3721be47bb39a9b67467e97a848d4b493bd1bd Mon Sep 17 00:00:00 2001
From: Gregory Etelson <getelson at nvidia.com>
Date: Thu, 29 Feb 2024 18:05:04 +0200
Subject: [PATCH] net/mlx5: fix IP-in-IP tunnels recognition

[ upstream commit 2db234e769e121446b7b6d8e97e00212bebf7a3c ]

The patch fixes IP-in-IP tunnel recognition for the following patterns

 / [ipv4|ipv6] proto is [ipv4|ipv6] / end

 / [ipv4|ipv6] / [ipv4|ipv6] /

Fixes: 3d69434113d1 ("net/mlx5: add Direct Verbs validation function")

Signed-off-by: Gregory Etelson <getelson at nvidia.com>
Acked-by: Ori Kam <orika at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 104 ++++++++++++++++++++++++--------
 1 file changed, 80 insertions(+), 24 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index a4fca70b07..68d3ee0c36 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -267,21 +267,41 @@ struct field_modify_info modify_tcp[] = {
 	{0, 0, 0},
 };
 
-static void
+enum mlx5_l3_tunnel_detection {
+	l3_tunnel_none,
+	l3_tunnel_outer,
+	l3_tunnel_inner
+};
+
+static enum mlx5_l3_tunnel_detection
 mlx5_flow_tunnel_ip_check(const struct rte_flow_item *item __rte_unused,
-			  uint8_t next_protocol, uint64_t *item_flags,
-			  int *tunnel)
+			  uint8_t next_protocol, uint64_t item_flags,
+			  uint64_t *l3_tunnel_flag)
 {
+	enum mlx5_l3_tunnel_detection td = l3_tunnel_none;
+
 	MLX5_ASSERT(item->type == RTE_FLOW_ITEM_TYPE_IPV4 ||
 		    item->type == RTE_FLOW_ITEM_TYPE_IPV6);
-	if (next_protocol == IPPROTO_IPIP) {
-		*item_flags |= MLX5_FLOW_LAYER_IPIP;
-		*tunnel = 1;
-	}
-	if (next_protocol == IPPROTO_IPV6) {
-		*item_flags |= MLX5_FLOW_LAYER_IPV6_ENCAP;
-		*tunnel = 1;
+	if ((item_flags & MLX5_FLOW_LAYER_OUTER_L3) == 0) {
+		switch (next_protocol) {
+		case IPPROTO_IPIP:
+			td = l3_tunnel_outer;
+			*l3_tunnel_flag = MLX5_FLOW_LAYER_IPIP;
+			break;
+		case IPPROTO_IPV6:
+			td = l3_tunnel_outer;
+			*l3_tunnel_flag = MLX5_FLOW_LAYER_IPV6_ENCAP;
+			break;
+		default:
+			break;
+		}
+	} else {
+		td = l3_tunnel_inner;
+		*l3_tunnel_flag = item->type == RTE_FLOW_ITEM_TYPE_IPV4 ?
+				  MLX5_FLOW_LAYER_IPIP :
+				  MLX5_FLOW_LAYER_IPV6_ENCAP;
 	}
+	return td;
 }
 
 static inline struct mlx5_hlist *
@@ -7142,6 +7162,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 		return ret;
 	is_root = (uint64_t)ret;
 	for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
+		enum mlx5_l3_tunnel_detection l3_tunnel_detection;
+		uint64_t l3_tunnel_flag;
 		int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
 		int type = items->type;
 
@@ -7219,8 +7241,16 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 				vlan_m = items->mask;
 			break;
 		case RTE_FLOW_ITEM_TYPE_IPV4:
-			mlx5_flow_tunnel_ip_check(items, next_protocol,
-						  &item_flags, &tunnel);
+			next_protocol = mlx5_flow_l3_next_protocol
+				(items, (enum MLX5_SET_MATCHER)-1);
+			l3_tunnel_detection =
+				mlx5_flow_tunnel_ip_check(items, next_protocol,
+							  item_flags,
+							  &l3_tunnel_flag);
+			if (l3_tunnel_detection == l3_tunnel_inner) {
+				item_flags |= l3_tunnel_flag;
+				tunnel = 1;
+			}
 			ret = flow_dv_validate_item_ipv4(dev, items, item_flags,
 							 last_item, ether_type,
 							 error);
@@ -7228,12 +7258,20 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 				return ret;
 			last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
 					     MLX5_FLOW_LAYER_OUTER_L3_IPV4;
-			next_protocol = mlx5_flow_l3_next_protocol
-				(items, (enum MLX5_SET_MATCHER)-1);
+			if (l3_tunnel_detection == l3_tunnel_outer)
+				item_flags |= l3_tunnel_flag;
 			break;
 		case RTE_FLOW_ITEM_TYPE_IPV6:
-			mlx5_flow_tunnel_ip_check(items, next_protocol,
-						  &item_flags, &tunnel);
+			next_protocol = mlx5_flow_l3_next_protocol
+				(items, (enum MLX5_SET_MATCHER)-1);
+			l3_tunnel_detection =
+				mlx5_flow_tunnel_ip_check(items, next_protocol,
+							  item_flags,
+							  &l3_tunnel_flag);
+			if (l3_tunnel_detection == l3_tunnel_inner) {
+				item_flags |= l3_tunnel_flag;
+				tunnel = 1;
+			}
 			ret = mlx5_flow_validate_item_ipv6(items, item_flags,
 							   last_item,
 							   ether_type,
@@ -7243,8 +7281,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 				return ret;
 			last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
 					     MLX5_FLOW_LAYER_OUTER_L3_IPV6;
-			next_protocol = mlx5_flow_l3_next_protocol
-					(items, (enum MLX5_SET_MATCHER)-1);
+			if (l3_tunnel_detection == l3_tunnel_outer)
+				item_flags |= l3_tunnel_flag;
 			break;
 		case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
 			ret = flow_dv_validate_item_ipv6_frag_ext(items,
@@ -13197,6 +13235,8 @@ flow_dv_translate_items(struct rte_eth_dev *dev,
 	int tunnel = !!(wks->item_flags & MLX5_FLOW_LAYER_TUNNEL);
 	int item_type = items->type;
 	uint64_t last_item = wks->last_item;
+	enum mlx5_l3_tunnel_detection l3_tunnel_detection;
+	uint64_t l3_tunnel_flag;
 	int ret;
 
 	switch (item_type) {
@@ -13240,24 +13280,40 @@ flow_dv_translate_items(struct rte_eth_dev *dev,
 					  MLX5_FLOW_LAYER_OUTER_VLAN);
 		break;
 	case RTE_FLOW_ITEM_TYPE_IPV4:
-		mlx5_flow_tunnel_ip_check(items, next_protocol,
-					  &wks->item_flags, &tunnel);
+		next_protocol = mlx5_flow_l3_next_protocol(items, key_type);
+		l3_tunnel_detection =
+			mlx5_flow_tunnel_ip_check(items, next_protocol,
+						  wks->item_flags,
+						  &l3_tunnel_flag);
+		if (l3_tunnel_detection == l3_tunnel_inner) {
+			wks->item_flags |= l3_tunnel_flag;
+			tunnel = 1;
+		}
 		flow_dv_translate_item_ipv4(key, items, tunnel,
 					    wks->group, key_type);
 		wks->priority = MLX5_PRIORITY_MAP_L3;
 		last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
 				     MLX5_FLOW_LAYER_OUTER_L3_IPV4;
-		next_protocol = mlx5_flow_l3_next_protocol(items, key_type);
+		if (l3_tunnel_detection == l3_tunnel_outer)
+			wks->item_flags |= l3_tunnel_flag;
 		break;
 	case RTE_FLOW_ITEM_TYPE_IPV6:
-		mlx5_flow_tunnel_ip_check(items, next_protocol,
-					  &wks->item_flags, &tunnel);
+		next_protocol = mlx5_flow_l3_next_protocol(items, key_type);
+		l3_tunnel_detection =
+			mlx5_flow_tunnel_ip_check(items, next_protocol,
+						  wks->item_flags,
+						  &l3_tunnel_flag);
+		if (l3_tunnel_detection == l3_tunnel_inner) {
+			wks->item_flags |= l3_tunnel_flag;
+			tunnel = 1;
+		}
 		flow_dv_translate_item_ipv6(key, items, tunnel,
 					    wks->group, key_type);
 		wks->priority = MLX5_PRIORITY_MAP_L3;
 		last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
 				     MLX5_FLOW_LAYER_OUTER_L3_IPV6;
-		next_protocol = mlx5_flow_l3_next_protocol(items, key_type);
+		if (l3_tunnel_detection == l3_tunnel_outer)
+			wks->item_flags |= l3_tunnel_flag;
 		break;
 	case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
 		flow_dv_translate_item_ipv6_frag_ext
-- 
2.39.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-03-18 12:58:40.123113801 +0000
+++ 0020-net-mlx5-fix-IP-in-IP-tunnels-recognition.patch	2024-03-18 12:58:39.199347086 +0000
@@ -1 +1 @@
-From 2db234e769e121446b7b6d8e97e00212bebf7a3c Mon Sep 17 00:00:00 2001
+From fd3721be47bb39a9b67467e97a848d4b493bd1bd Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 2db234e769e121446b7b6d8e97e00212bebf7a3c ]
+
@@ -13 +14,0 @@
-Cc: stable at dpdk.org
@@ -22 +23 @@
-index 9e444c8a1c..80239bebee 100644
+index a4fca70b07..68d3ee0c36 100644
@@ -25 +26 @@
-@@ -275,21 +275,41 @@ struct field_modify_info modify_tcp[] = {
+@@ -267,21 +267,41 @@ struct field_modify_info modify_tcp[] = {
@@ -77 +78 @@
-@@ -7718,6 +7738,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -7142,6 +7162,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
@@ -86 +87 @@
-@@ -7795,8 +7817,16 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -7219,8 +7241,16 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
@@ -105 +106 @@
-@@ -7804,12 +7834,20 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -7228,12 +7258,20 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
@@ -130 +131 @@
-@@ -7819,8 +7857,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -7243,8 +7281,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
@@ -141 +142 @@
-@@ -13945,6 +13983,8 @@ flow_dv_translate_items(struct rte_eth_dev *dev,
+@@ -13197,6 +13235,8 @@ flow_dv_translate_items(struct rte_eth_dev *dev,
@@ -150 +151 @@
-@@ -13988,24 +14028,40 @@ flow_dv_translate_items(struct rte_eth_dev *dev,
+@@ -13240,24 +13280,40 @@ flow_dv_translate_items(struct rte_eth_dev *dev,


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