X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_gso%2Frte_gso.c;h=751b5b625e34bf31066abc7ba75e420aa2b1fc23;hb=f74904ce98e84f48e8f3a96b7ad6b6347c3f44b6;hp=b77363682b25729aae1fc0cc228552c79dbcc118;hpb=ec51443cc99a6e20e8e2210d92d59ae760971f90;p=dpdk.git

diff --git a/lib/librte_gso/rte_gso.c b/lib/librte_gso/rte_gso.c
index b77363682b..751b5b625e 100644
--- a/lib/librte_gso/rte_gso.c
+++ b/lib/librte_gso/rte_gso.c
@@ -1,39 +1,27 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2017 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Intel Corporation
  */
 
 #include <errno.h>
 
+#include <rte_log.h>
+#include <rte_ethdev.h>
+
 #include "rte_gso.h"
+#include "gso_common.h"
+#include "gso_tcp4.h"
+#include "gso_tunnel_tcp4.h"
+#include "gso_udp4.h"
+
+#define ILLEGAL_UDP_GSO_CTX(ctx) \
+	((((ctx)->gso_types & DEV_TX_OFFLOAD_UDP_TSO) == 0) || \
+	 (ctx)->gso_size < RTE_GSO_UDP_SEG_SIZE_MIN)
+
+#define ILLEGAL_TCP_GSO_CTX(ctx) \
+	((((ctx)->gso_types & (DEV_TX_OFFLOAD_TCP_TSO | \
+		DEV_TX_OFFLOAD_VXLAN_TNL_TSO | \
+		DEV_TX_OFFLOAD_GRE_TNL_TSO)) == 0) || \
+		(ctx)->gso_size < RTE_GSO_SEG_SIZE_MIN)
 
 int
 rte_gso_segment(struct rte_mbuf *pkt,
@@ -41,12 +29,67 @@ rte_gso_segment(struct rte_mbuf *pkt,
 		struct rte_mbuf **pkts_out,
 		uint16_t nb_pkts_out)
 {
+	struct rte_mempool *direct_pool, *indirect_pool;
+	struct rte_mbuf *pkt_seg;
+	uint64_t ol_flags;
+	uint16_t gso_size;
+	uint8_t ipid_delta;
+	int ret = 1;
+
 	if (pkt == NULL || pkts_out == NULL || gso_ctx == NULL ||
-			nb_pkts_out < 1)
+			nb_pkts_out < 1 ||
+			(ILLEGAL_UDP_GSO_CTX(gso_ctx) &&
+			 ILLEGAL_TCP_GSO_CTX(gso_ctx)))
 		return -EINVAL;
 
-	pkt->ol_flags &= (~PKT_TX_TCP_SEG);
-	pkts_out[0] = pkt;
+	if (gso_ctx->gso_size >= pkt->pkt_len) {
+		pkt->ol_flags &= (~(PKT_TX_TCP_SEG | PKT_TX_UDP_SEG));
+		pkts_out[0] = pkt;
+		return 1;
+	}
+
+	direct_pool = gso_ctx->direct_pool;
+	indirect_pool = gso_ctx->indirect_pool;
+	gso_size = gso_ctx->gso_size;
+	ipid_delta = (gso_ctx->flag != RTE_GSO_FLAG_IPID_FIXED);
+	ol_flags = pkt->ol_flags;
+
+	if ((IS_IPV4_VXLAN_TCP4(pkt->ol_flags) &&
+			(gso_ctx->gso_types & DEV_TX_OFFLOAD_VXLAN_TNL_TSO)) ||
+			((IS_IPV4_GRE_TCP4(pkt->ol_flags) &&
+			 (gso_ctx->gso_types & DEV_TX_OFFLOAD_GRE_TNL_TSO)))) {
+		pkt->ol_flags &= (~PKT_TX_TCP_SEG);
+		ret = gso_tunnel_tcp4_segment(pkt, gso_size, ipid_delta,
+				direct_pool, indirect_pool,
+				pkts_out, nb_pkts_out);
+	} else if (IS_IPV4_TCP(pkt->ol_flags) &&
+			(gso_ctx->gso_types & DEV_TX_OFFLOAD_TCP_TSO)) {
+		pkt->ol_flags &= (~PKT_TX_TCP_SEG);
+		ret = gso_tcp4_segment(pkt, gso_size, ipid_delta,
+				direct_pool, indirect_pool,
+				pkts_out, nb_pkts_out);
+	} else if (IS_IPV4_UDP(pkt->ol_flags) &&
+			(gso_ctx->gso_types & DEV_TX_OFFLOAD_UDP_TSO)) {
+		pkt->ol_flags &= (~PKT_TX_UDP_SEG);
+		ret = gso_udp4_segment(pkt, gso_size, direct_pool,
+				indirect_pool, pkts_out, nb_pkts_out);
+	} else {
+		/* unsupported packet, skip */
+		pkts_out[0] = pkt;
+		RTE_LOG(DEBUG, GSO, "Unsupported packet type\n");
+		return 1;
+	}
+
+	if (ret > 1) {
+		pkt_seg = pkt;
+		while (pkt_seg) {
+			rte_mbuf_refcnt_update(pkt_seg, -1);
+			pkt_seg = pkt_seg->next;
+		}
+	} else if (ret < 0) {
+		/* Revert the ol_flags in the event of failure. */
+		pkt->ol_flags = ol_flags;
+	}
 
-	return 1;
+	return ret;
 }