Merge branch 'net-mlx5e-misc-changes-2025-07-22'

Tariq Toukan says:

====================
net/mlx5e: misc changes 2025-07-22

This series contains misc enhancements to the mlx5e driver.
====================

Link: https://patch.msgid.link/1753194228-333722-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2 files changed, 105 insertions, 2 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
index bd96988e102c..85d5cb39b107 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
@@ -311,6 +311,30 @@ out:
 	mlx5e_health_fmsg_named_obj_nest_end(fmsg);
 }
 
+static void
+mlx5e_tx_reporter_diagnose_tis_config(struct devlink_health_reporter *reporter,
+				      struct devlink_fmsg *fmsg)
+{
+	struct mlx5e_priv *priv = devlink_health_reporter_priv(reporter);
+	u8 num_tc = mlx5e_get_dcb_num_tc(&priv->channels.params);
+	u32 tc, i, tisn;
+
+	devlink_fmsg_arr_pair_nest_start(fmsg, "TIS Config");
+	for (i = 0; i < mlx5e_get_num_lag_ports(priv->mdev); i++) {
+		for (tc = 0; tc < num_tc; tc++) {
+			tisn = mlx5e_profile_get_tisn(priv->mdev, priv,
+						      priv->profile, i, tc);
+
+			devlink_fmsg_obj_nest_start(fmsg);
+			devlink_fmsg_u32_pair_put(fmsg, "lag port", i);
+			devlink_fmsg_u32_pair_put(fmsg, "tc", tc);
+			devlink_fmsg_u32_pair_put(fmsg, "tisn", tisn);
+			devlink_fmsg_obj_nest_end(fmsg);
+		}
+	}
+	devlink_fmsg_arr_pair_nest_end(fmsg);
+}
+
 static int mlx5e_tx_reporter_diagnose(struct devlink_health_reporter *reporter,
 				      struct devlink_fmsg *fmsg,
 				      struct netlink_ext_ack *extack)
@@ -326,6 +350,7 @@ static int mlx5e_tx_reporter_diagnose(struct devlink_health_reporter *reporter,
 		goto unlock;
 
 	mlx5e_tx_reporter_diagnose_common_config(reporter, fmsg);
+	mlx5e_tx_reporter_diagnose_tis_config(reporter, fmsg);
 	devlink_fmsg_arr_pair_nest_start(fmsg, "SQs");
 
 	for (i = 0; i < priv->channels.num; i++) {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 77f61cd28a79..00e77c71e201 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -36,6 +36,7 @@
 #include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <net/netevent.h>
+#include <net/ipv6_stubs.h>
 
 #include "en.h"
 #include "eswitch.h"
@@ -259,9 +260,15 @@ static void mlx5e_ipsec_init_macs(struct mlx5e_ipsec_sa_entry *sa_entry,
 				  struct mlx5_accel_esp_xfrm_attrs *attrs)
 {
 	struct mlx5_core_dev *mdev = mlx5e_ipsec_sa2dev(sa_entry);
+	struct mlx5e_ipsec_addr *addrs = &attrs->addrs;
 	struct net_device *netdev = sa_entry->dev;
+	struct xfrm_state *x = sa_entry->x;
+	struct dst_entry *rt_dst_entry;
+	struct flowi4 fl4 = {};
+	struct flowi6 fl6 = {};
 	struct neighbour *n;
 	u8 addr[ETH_ALEN];
+	struct rtable *rt;
 	const void *pkey;
 	u8 *dst, *src;
 
@@ -274,18 +281,89 @@ static void mlx5e_ipsec_init_macs(struct mlx5e_ipsec_sa_entry *sa_entry,
 	case XFRM_DEV_OFFLOAD_IN:
 		src = attrs->dmac;
 		dst = attrs->smac;
-		pkey = &attrs->addrs.saddr.a4;
+
+		switch (addrs->family) {
+		case AF_INET:
+			fl4.flowi4_proto = x->sel.proto;
+			fl4.daddr = addrs->saddr.a4;
+			fl4.saddr = addrs->daddr.a4;
+			pkey = &addrs->saddr.a4;
+			break;
+		case AF_INET6:
+			fl6.flowi6_proto = x->sel.proto;
+			memcpy(fl6.daddr.s6_addr32, addrs->saddr.a6, 16);
+			memcpy(fl6.saddr.s6_addr32, addrs->daddr.a6, 16);
+			pkey = &addrs->saddr.a6;
+			break;
+		default:
+			return;
+		}
 		break;
 	case XFRM_DEV_OFFLOAD_OUT:
 		src = attrs->smac;
 		dst = attrs->dmac;
-		pkey = &attrs->addrs.daddr.a4;
+		switch (addrs->family) {
+		case AF_INET:
+			fl4.flowi4_proto = x->sel.proto;
+			fl4.daddr = addrs->daddr.a4;
+			fl4.saddr = addrs->saddr.a4;
+			pkey = &addrs->daddr.a4;
+			break;
+		case AF_INET6:
+			fl6.flowi6_proto = x->sel.proto;
+			memcpy(fl6.daddr.s6_addr32, addrs->daddr.a6, 16);
+			memcpy(fl6.saddr.s6_addr32, addrs->saddr.a6, 16);
+			pkey = &addrs->daddr.a6;
+			break;
+		default:
+			return;
+		}
 		break;
 	default:
 		return;
 	}
 
 	ether_addr_copy(src, addr);
+
+	/* Destination can refer to a routed network, so perform FIB lookup
+	 * to resolve nexthop and get its MAC. Neighbour resolution is used as
+	 * fallback.
+	 */
+	switch (addrs->family) {
+	case AF_INET:
+		rt = ip_route_output_key(dev_net(netdev), &fl4);
+		if (IS_ERR(rt))
+			goto neigh;
+
+		if (rt->rt_type != RTN_UNICAST) {
+			ip_rt_put(rt);
+			goto neigh;
+		}
+		rt_dst_entry = &rt->dst;
+		break;
+	case AF_INET6:
+		rt_dst_entry = ipv6_stub->ipv6_dst_lookup_flow(
+			dev_net(netdev), NULL, &fl6, NULL);
+		if (IS_ERR(rt_dst_entry))
+			goto neigh;
+		break;
+	default:
+		return;
+	}
+
+	n = dst_neigh_lookup(rt_dst_entry, pkey);
+	if (!n) {
+		dst_release(rt_dst_entry);
+		goto neigh;
+	}
+
+	neigh_ha_snapshot(addr, n, netdev);
+	ether_addr_copy(dst, addr);
+	dst_release(rt_dst_entry);
+	neigh_release(n);
+	return;
+
+neigh:
 	n = neigh_lookup(&arp_tbl, pkey, netdev);
 	if (!n) {
 		n = neigh_create(&arp_tbl, pkey, netdev);