X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_gso%2Frte_gso.c;h=822693fa02828952d77f7511e454d789c43ea462;hb=119583797b6ae44990934d7b965e76463530ca7a;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..822693fa02 100644
--- a/lib/librte_gso/rte_gso.c
+++ b/lib/librte_gso/rte_gso.c
@@ -33,7 +33,12 @@
 
 #include <errno.h>
 
+#include <rte_log.h>
+#include <rte_ethdev.h>
+
 #include "rte_gso.h"
+#include "gso_common.h"
+#include "gso_tcp4.h"
 
 int
 rte_gso_segment(struct rte_mbuf *pkt,
@@ -41,12 +46,52 @@ 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 ||
+			gso_ctx->gso_size < RTE_GSO_SEG_SIZE_MIN ||
+			gso_ctx->gso_types != DEV_TX_OFFLOAD_TCP_TSO)
 		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);
+		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_TCP(pkt->ol_flags)) {
+		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 {
+		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;
 }