Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/spdk/dpdk/lib/librte_gso/gso_tcp4.c b/src/spdk/dpdk/lib/librte_gso/gso_tcp4.c
new file mode 100644
index 000000000..ade172ac7
--- /dev/null
+++ b/src/spdk/dpdk/lib/librte_gso/gso_tcp4.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Intel Corporation
+ */
+
+#include "gso_common.h"
+#include "gso_tcp4.h"
+
+static void
+update_ipv4_tcp_headers(struct rte_mbuf *pkt, uint8_t ipid_delta,
+		struct rte_mbuf **segs, uint16_t nb_segs)
+{
+	struct rte_ipv4_hdr *ipv4_hdr;
+	struct rte_tcp_hdr *tcp_hdr;
+	uint32_t sent_seq;
+	uint16_t id, tail_idx, i;
+	uint16_t l3_offset = pkt->l2_len;
+	uint16_t l4_offset = l3_offset + pkt->l3_len;
+
+	ipv4_hdr = (struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(pkt, char*) +
+			l3_offset);
+	tcp_hdr = (struct rte_tcp_hdr *)((char *)ipv4_hdr + pkt->l3_len);
+	id = rte_be_to_cpu_16(ipv4_hdr->packet_id);
+	sent_seq = rte_be_to_cpu_32(tcp_hdr->sent_seq);
+	tail_idx = nb_segs - 1;
+
+	for (i = 0; i < nb_segs; i++) {
+		update_ipv4_header(segs[i], l3_offset, id);
+		update_tcp_header(segs[i], l4_offset, sent_seq, i < tail_idx);
+		id += ipid_delta;
+		sent_seq += (segs[i]->pkt_len - segs[i]->data_len);
+	}
+}
+
+int
+gso_tcp4_segment(struct rte_mbuf *pkt,
+		uint16_t gso_size,
+		uint8_t ipid_delta,
+		struct rte_mempool *direct_pool,
+		struct rte_mempool *indirect_pool,
+		struct rte_mbuf **pkts_out,
+		uint16_t nb_pkts_out)
+{
+	struct rte_ipv4_hdr *ipv4_hdr;
+	uint16_t pyld_unit_size, hdr_offset;
+	uint16_t frag_off;
+	int ret;
+
+	/* Don't process the fragmented packet */
+	ipv4_hdr = (struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(pkt, char *) +
+			pkt->l2_len);
+	frag_off = rte_be_to_cpu_16(ipv4_hdr->fragment_offset);
+	if (unlikely(IS_FRAGMENTED(frag_off))) {
+		pkts_out[0] = pkt;
+		return 1;
+	}
+
+	/* Don't process the packet without data */
+	hdr_offset = pkt->l2_len + pkt->l3_len + pkt->l4_len;
+	if (unlikely(hdr_offset >= pkt->pkt_len)) {
+		pkts_out[0] = pkt;
+		return 1;
+	}
+
+	pyld_unit_size = gso_size - hdr_offset;
+
+	/* Segment the payload */
+	ret = gso_do_segment(pkt, hdr_offset, pyld_unit_size, direct_pool,
+			indirect_pool, pkts_out, nb_pkts_out);
+	if (ret > 1)
+		update_ipv4_tcp_headers(pkt, ipid_delta, pkts_out, ret);
+
+	return ret;
+}