| 32 | } |
| 33 | |
| 34 | int |
| 35 | gso_tcp4_segment(struct rte_mbuf *pkt, |
| 36 | uint16_t gso_size, |
| 37 | uint8_t ipid_delta, |
| 38 | struct rte_mempool *direct_pool, |
| 39 | struct rte_mempool *indirect_pool, |
| 40 | struct rte_mbuf **pkts_out, |
| 41 | uint16_t nb_pkts_out) |
| 42 | { |
| 43 | struct rte_ipv4_hdr *ipv4_hdr; |
| 44 | uint16_t pyld_unit_size, hdr_offset; |
| 45 | uint16_t frag_off; |
| 46 | int ret; |
| 47 | |
| 48 | /* Don't process the fragmented packet */ |
| 49 | ipv4_hdr = (struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(pkt, char *) + |
| 50 | pkt->l2_len); |
| 51 | frag_off = rte_be_to_cpu_16(ipv4_hdr->fragment_offset); |
| 52 | if (unlikely(IS_FRAGMENTED(frag_off))) { |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | /* Don't process the packet without data */ |
| 57 | hdr_offset = pkt->l2_len + pkt->l3_len + pkt->l4_len; |
| 58 | if (unlikely(hdr_offset >= pkt->pkt_len)) { |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | pyld_unit_size = gso_size - hdr_offset; |
| 63 | |
| 64 | /* Segment the payload */ |
| 65 | ret = gso_do_segment(pkt, hdr_offset, pyld_unit_size, direct_pool, |
| 66 | indirect_pool, pkts_out, nb_pkts_out); |
| 67 | if (ret > 1) |
| 68 | update_ipv4_tcp_headers(pkt, ipid_delta, pkts_out, ret); |
| 69 | |
| 70 | return ret; |
| 71 | } |
no test coverage detected