99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2017 Intel Corporation
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*/
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#include <errno.h>
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#include <rte_log.h>
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#include <rte_ethdev.h>
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#include "rte_gso.h"
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#include "gso_common.h"
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#include "gso_tcp4.h"
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#include "gso_tunnel_tcp4.h"
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#include "gso_tunnel_udp4.h"
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#include "gso_udp4.h"
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#define ILLEGAL_UDP_GSO_CTX(ctx) \
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((((ctx)->gso_types & DEV_TX_OFFLOAD_UDP_TSO) == 0) || \
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(ctx)->gso_size < RTE_GSO_UDP_SEG_SIZE_MIN)
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#define ILLEGAL_TCP_GSO_CTX(ctx) \
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((((ctx)->gso_types & (DEV_TX_OFFLOAD_TCP_TSO | \
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DEV_TX_OFFLOAD_VXLAN_TNL_TSO | \
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DEV_TX_OFFLOAD_GRE_TNL_TSO)) == 0) || \
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(ctx)->gso_size < RTE_GSO_SEG_SIZE_MIN)
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int
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rte_gso_segment(struct rte_mbuf *pkt,
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const struct rte_gso_ctx *gso_ctx,
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struct rte_mbuf **pkts_out,
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uint16_t nb_pkts_out)
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{
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struct rte_mempool *direct_pool, *indirect_pool;
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uint64_t ol_flags;
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uint16_t gso_size;
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uint8_t ipid_delta;
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int ret = 1;
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if (pkt == NULL || pkts_out == NULL || gso_ctx == NULL ||
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nb_pkts_out < 1 ||
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(ILLEGAL_UDP_GSO_CTX(gso_ctx) &&
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ILLEGAL_TCP_GSO_CTX(gso_ctx)))
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return -EINVAL;
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if (gso_ctx->gso_size >= pkt->pkt_len) {
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pkt->ol_flags &= (~(PKT_TX_TCP_SEG | PKT_TX_UDP_SEG));
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return 0;
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}
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direct_pool = gso_ctx->direct_pool;
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indirect_pool = gso_ctx->indirect_pool;
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gso_size = gso_ctx->gso_size;
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ipid_delta = (gso_ctx->flag != RTE_GSO_FLAG_IPID_FIXED);
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ol_flags = pkt->ol_flags;
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if ((IS_IPV4_VXLAN_TCP4(pkt->ol_flags) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_VXLAN_TNL_TSO)) ||
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((IS_IPV4_GRE_TCP4(pkt->ol_flags) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_GRE_TNL_TSO)))) {
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pkt->ol_flags &= (~PKT_TX_TCP_SEG);
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ret = gso_tunnel_tcp4_segment(pkt, gso_size, ipid_delta,
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direct_pool, indirect_pool,
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pkts_out, nb_pkts_out);
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} else if (IS_IPV4_VXLAN_UDP4(pkt->ol_flags) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_VXLAN_TNL_TSO) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_UDP_TSO)) {
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pkt->ol_flags &= (~PKT_TX_UDP_SEG);
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ret = gso_tunnel_udp4_segment(pkt, gso_size,
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direct_pool, indirect_pool,
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pkts_out, nb_pkts_out);
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} else if (IS_IPV4_TCP(pkt->ol_flags) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_TCP_TSO)) {
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pkt->ol_flags &= (~PKT_TX_TCP_SEG);
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ret = gso_tcp4_segment(pkt, gso_size, ipid_delta,
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direct_pool, indirect_pool,
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pkts_out, nb_pkts_out);
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} else if (IS_IPV4_UDP(pkt->ol_flags) &&
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(gso_ctx->gso_types & DEV_TX_OFFLOAD_UDP_TSO)) {
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pkt->ol_flags &= (~PKT_TX_UDP_SEG);
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ret = gso_udp4_segment(pkt, gso_size, direct_pool,
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indirect_pool, pkts_out, nb_pkts_out);
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} else {
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/* unsupported packet, skip */
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RTE_LOG(DEBUG, GSO, "Unsupported packet type\n");
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ret = 0;
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}
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if (ret < 0) {
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/* Revert the ol_flags in the event of failure. */
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pkt->ol_flags = ol_flags;
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}
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return ret;
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}
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