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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_rxtx.c
..
..
@@ -181,16 +181,12 @@
181
181
 	 */
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 	nskb->ip_summed = CHECKSUM_PARTIAL;
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183
 
184
-	nskb->xmit_more = 1;
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 	nskb->queue_mapping = skb->queue_mapping;
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 }
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186
 
188
-static struct sk_buff *
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-mlx5e_tls_handle_ooo(struct mlx5e_tls_offload_context_tx *context,
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-		     struct mlx5e_txqsq *sq, struct sk_buff *skb,
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-		     struct mlx5e_tx_wqe **wqe,
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-		     u16 *pi,
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-		     struct mlx5e_tls *tls)
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+static bool mlx5e_tls_handle_ooo(struct mlx5e_tls_offload_context_tx *context,
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+				 struct mlx5e_txqsq *sq, struct sk_buff *skb,
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+				 struct mlx5e_tls *tls)
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 {
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 	u32 tcp_seq = ntohl(tcp_hdr(skb)->seq);
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 	struct sync_info info;
..
..
@@ -218,7 +214,7 @@
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 		if (likely(payload <= -info.sync_len))
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 			/* SKB payload doesn't require offload
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 			 */
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-			return skb;
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+			return true;
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218
 
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 		atomic64_inc(&tls->sw_stats.tx_tls_drop_bypass_required);
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 		goto err_out;
..
..
@@ -248,20 +244,17 @@
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 	sq->stats->tls_resync_bytes += nskb->len;
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 	mlx5e_tls_complete_sync_skb(skb, nskb, tcp_seq, headln,
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 				    cpu_to_be64(info.rcd_sn));
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-	mlx5e_sq_xmit(sq, nskb, *wqe, *pi);
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-	mlx5e_sq_fetch_wqe(sq, wqe, pi);
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-	return skb;
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+	mlx5e_sq_xmit_simple(sq, nskb, true);
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+
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+	return true;
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250
 
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251
 err_out:
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252
 	dev_kfree_skb_any(skb);
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-	return NULL;
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+	return false;
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254
 }
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255
 
260
-struct sk_buff *mlx5e_tls_handle_tx_skb(struct net_device *netdev,
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-					struct mlx5e_txqsq *sq,
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-					struct sk_buff *skb,
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-					struct mlx5e_tx_wqe **wqe,
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-					u16 *pi)
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+bool mlx5e_tls_handle_tx_skb(struct net_device *netdev, struct mlx5e_txqsq *sq,
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+			     struct sk_buff *skb, struct mlx5e_accel_tx_tls_state *state)
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 {
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 	struct mlx5e_priv *priv = netdev_priv(netdev);
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260
 	struct mlx5e_tls_offload_context_tx *context;
..
..
@@ -271,35 +264,47 @@
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264
 	u32 skb_seq;
272
265
 
273
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 	if (!skb->sk || !tls_is_sk_tx_device_offloaded(skb->sk))
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-		goto out;
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+		return true;
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268
 
276
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 	datalen = skb->len - (skb_transport_offset(skb) + tcp_hdrlen(skb));
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270
 	if (!datalen)
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-		goto out;
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+		return true;
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+
273
+	mlx5e_tx_mpwqe_ensure_complete(sq);
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274
 
280
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 	tls_ctx = tls_get_ctx(skb->sk);
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-	if (unlikely(tls_ctx->netdev != netdev))
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-		goto out;
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+	if (WARN_ON_ONCE(tls_ctx->netdev != netdev))
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+		goto err_out;
283
278
 
279
+	if (mlx5_accel_is_ktls_tx(sq->channel->mdev))
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+		return mlx5e_ktls_handle_tx_skb(tls_ctx, sq, skb, datalen, state);
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+
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+	/* FPGA */
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283
 	skb_seq = ntohl(tcp_hdr(skb)->seq);
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 	context = mlx5e_get_tls_tx_context(tls_ctx);
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285
 	expected_seq = context->expected_seq;
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286
 
288
-	if (unlikely(expected_seq != skb_seq)) {
289
-		skb = mlx5e_tls_handle_ooo(context, sq, skb, wqe, pi, priv->tls);
290
-		goto out;
291
-	}
287
+	if (unlikely(expected_seq != skb_seq))
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+		return mlx5e_tls_handle_ooo(context, sq, skb, priv->tls);
292
289
 
293
290
 	if (unlikely(mlx5e_tls_add_metadata(skb, context->swid))) {
294
291
 		atomic64_inc(&priv->tls->sw_stats.tx_tls_drop_metadata);
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292
 		dev_kfree_skb_any(skb);
296
-		skb = NULL;
297
-		goto out;
293
+		return false;
298
294
 	}
299
295
 
300
296
 	context->expected_seq = skb_seq + datalen;
301
-out:
302
-	return skb;
297
+	return true;
298
+
299
+err_out:
300
+	dev_kfree_skb_any(skb);
301
+	return false;
302
+}
303
+
304
+void mlx5e_tls_handle_tx_wqe(struct mlx5e_txqsq *sq, struct mlx5_wqe_ctrl_seg *cseg,
305
+			     struct mlx5e_accel_tx_tls_state *state)
306
+{
307
+	cseg->tis_tir_num = cpu_to_be32(state->tls_tisn << 8);
303
308
 }
304
309
 
305
310
 static int tls_update_resync_sn(struct net_device *netdev,
..
..
@@ -348,14 +353,12 @@
348
353
 	return 0;
349
354
 }
350
355
 
351
-void mlx5e_tls_handle_rx_skb(struct net_device *netdev, struct sk_buff *skb,
352
-			     u32 *cqe_bcnt)
356
+/* FPGA tls rx handler */
357
+void mlx5e_tls_handle_rx_skb_metadata(struct mlx5e_rq *rq, struct sk_buff *skb,
358
+				      u32 *cqe_bcnt)
353
359
 {
354
360
 	struct mlx5e_tls_metadata *mdata;
355
361
 	struct mlx5e_priv *priv;
356
-
357
-	if (!is_metadata_hdr_valid(skb))
358
-		return;
359
362
 
360
363
 	/* Use the metadata */
361
364
 	mdata = (struct mlx5e_tls_metadata *)(skb->data + ETH_HLEN);
..
..
@@ -364,13 +367,13 @@
364
367
 		skb->decrypted = 1;
365
368
 		break;
366
369
 	case SYNDROM_RESYNC_REQUEST:
367
-		tls_update_resync_sn(netdev, skb, mdata);
368
-		priv = netdev_priv(netdev);
370
+		tls_update_resync_sn(rq->netdev, skb, mdata);
371
+		priv = netdev_priv(rq->netdev);
369
372
 		atomic64_inc(&priv->tls->sw_stats.rx_tls_resync_request);
370
373
 		break;
371
374
 	case SYNDROM_AUTH_FAILED:
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375
 		/* Authentication failure will be observed and verified by kTLS */
373
-		priv = netdev_priv(netdev);
376
+		priv = netdev_priv(rq->netdev);
374
377
 		atomic64_inc(&priv->tls->sw_stats.rx_tls_auth_fail);
375
378
 		break;
376
379
 	default:
..
..
@@ -381,3 +384,18 @@
381
384
 	remove_metadata_hdr(skb);
382
385
 	*cqe_bcnt -= MLX5E_METADATA_ETHER_LEN;
383
386
 }
387
+
388
+u16 mlx5e_tls_get_stop_room(struct mlx5e_txqsq *sq)
389
+{
390
+	struct mlx5_core_dev *mdev = sq->channel->mdev;
391
+
392
+	if (!mlx5_accel_is_tls_device(mdev))
393
+		return 0;
394
+
395
+	if (mlx5_accel_is_ktls_device(mdev))
396
+		return mlx5e_ktls_get_stop_room(sq);
397
+
398
+	/* FPGA */
399
+	/* Resync SKB. */
400
+	return mlx5e_stop_room_for_wqe(MLX5_SEND_WQE_MAX_WQEBBS);
401
+}