diff options
Diffstat (limited to 'tcp.c')
| -rw-r--r-- | tcp.c | 14 |
1 files changed, 12 insertions, 2 deletions
@@ -919,8 +919,10 @@ static void tcp_fill_header(struct tcphdr *th, /** * tcp_fill_headers() - Fill 802.3, IP, TCP headers + * @c: Execution context * @conn: Connection pointer * @taph: tap backend specific header + * @eh: Pointer to Ethernet header * @ip4h: Pointer to IPv4 header, or NULL * @ip6h: Pointer to IPv6 header, or NULL * @th: Pointer to TCP header @@ -929,14 +931,15 @@ static void tcp_fill_header(struct tcphdr *th, * @seq: Sequence number for this segment * @no_tcp_csum: Do not set TCP checksum */ -void tcp_fill_headers(const struct tcp_tap_conn *conn, - struct tap_hdr *taph, +void tcp_fill_headers(const struct ctx *c, struct tcp_tap_conn *conn, + struct tap_hdr *taph, struct ethhdr *eh, struct iphdr *ip4h, struct ipv6hdr *ip6h, struct tcphdr *th, struct iov_tail *payload, const uint16_t *ip4_check, uint32_t seq, bool no_tcp_csum) { const struct flowside *tapside = TAPFLOW(conn); size_t l4len = iov_tail_size(payload) + sizeof(*th); + uint8_t *omac = conn->f.tap_omac; size_t l3len = l4len; uint32_t psum = 0; @@ -962,6 +965,7 @@ void tcp_fill_headers(const struct tcp_tap_conn *conn, psum = proto_ipv4_header_psum(l4len, IPPROTO_TCP, *src4, *dst4); } + eh->h_proto = htons_constant(ETH_P_IP); } if (ip6h) { @@ -982,8 +986,14 @@ void tcp_fill_headers(const struct tcp_tap_conn *conn, &ip6h->saddr, &ip6h->daddr); } + eh->h_proto = htons_constant(ETH_P_IPV6); } + /* Find if neighbour table has a recorded MAC address */ + if (MAC_IS_UNDEF(omac)) + fwd_neigh_mac_get(c, &tapside->oaddr, omac); + eth_update_mac(eh, NULL, omac); + tcp_fill_header(th, conn, seq); if (no_tcp_csum) |