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[ipsec-next,2/2] net/mlx5e: Update TX ESN context for IPSec hardware offload

Message ID e9a68656c4b7cd0ba05055760c60dd649dbe1a5b.1734611621.git.leon@kernel.org (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series [ipsec-next,1/2] xfrm: Support ESN context update to hardware for TX | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: borisp@nvidia.com
netdev/build_clang success Errors and warnings before: 1 this patch: 1
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 60 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Leon Romanovsky Dec. 19, 2024, 12:37 p.m. UTC 
From: Jianbo Liu <jianbol@nvidia.com>

ESN context must be synced between software and hardware for both RX
and TX. As the call to xfrm_dev_state_advance_esn() is added for TX,
this patch add the missing logic for TX. So the update is also checked
on every packet sent, to see if need to trigger ESN update worker.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 40 +++++++------------
 1 file changed, 15 insertions(+), 25 deletions(-)
diff mbox series

Patch

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 3dd4f2492090..8489b0a0e8bd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -94,25 +94,14 @@  static bool mlx5e_ipsec_update_esn_state(struct mlx5e_ipsec_sa_entry *sa_entry)
 	u32 esn, esn_msb;
 	u8 overlap;
 
-	switch (x->xso.type) {
-	case XFRM_DEV_OFFLOAD_PACKET:
-		switch (x->xso.dir) {
-		case XFRM_DEV_OFFLOAD_IN:
-			esn = x->replay_esn->seq;
-			esn_msb = x->replay_esn->seq_hi;
-			break;
-		case XFRM_DEV_OFFLOAD_OUT:
-			esn = x->replay_esn->oseq;
-			esn_msb = x->replay_esn->oseq_hi;
-			break;
-		default:
-			WARN_ON(true);
-			return false;
-		}
-		break;
-	case XFRM_DEV_OFFLOAD_CRYPTO:
-		/* Already parsed by XFRM core */
+	switch (x->xso.dir) {
+	case XFRM_DEV_OFFLOAD_IN:
 		esn = x->replay_esn->seq;
+		esn_msb = x->replay_esn->seq_hi;
+		break;
+	case XFRM_DEV_OFFLOAD_OUT:
+		esn = x->replay_esn->oseq;
+		esn_msb = x->replay_esn->oseq_hi;
 		break;
 	default:
 		WARN_ON(true);
@@ -121,11 +110,15 @@  static bool mlx5e_ipsec_update_esn_state(struct mlx5e_ipsec_sa_entry *sa_entry)
 
 	overlap = sa_entry->esn_state.overlap;
 
-	if (esn >= x->replay_esn->replay_window)
-		seq_bottom = esn - x->replay_esn->replay_window + 1;
+	if (!x->replay_esn->replay_window) {
+		seq_bottom = esn;
+	} else {
+		if (esn >= x->replay_esn->replay_window)
+			seq_bottom = esn - x->replay_esn->replay_window + 1;
 
-	if (x->xso.type == XFRM_DEV_OFFLOAD_CRYPTO)
-		esn_msb = xfrm_replay_seqhi(x, htonl(seq_bottom));
+		if (x->xso.type == XFRM_DEV_OFFLOAD_CRYPTO)
+			esn_msb = xfrm_replay_seqhi(x, htonl(seq_bottom));
+	}
 
 	if (sa_entry->esn_state.esn_msb)
 		sa_entry->esn_state.esn = esn;
@@ -980,9 +973,6 @@  static void mlx5e_xfrm_advance_esn_state(struct xfrm_state *x)
 	struct mlx5e_ipsec_sa_entry *sa_entry_shadow;
 	bool need_update;
 
-	if (x->xso.dir != XFRM_DEV_OFFLOAD_IN)
-		return;
-
 	need_update = mlx5e_ipsec_update_esn_state(sa_entry);
 	if (!need_update)
 		return;