diff options
Diffstat (limited to 'tcp.c')
| -rw-r--r-- | tcp.c | 41 |
1 files changed, 13 insertions, 28 deletions
@@ -1059,7 +1059,6 @@ static void tcp_fill_header(struct tcphdr *th, /** * tcp_fill_headers4() - Fill 802.3, IPv4, TCP headers in pre-cooked buffers - * @c: Execution context * @conn: Connection pointer * @taph: tap backend specific header * @iph: Pointer to IPv4 header @@ -1070,27 +1069,26 @@ static void tcp_fill_header(struct tcphdr *th, * * Return: The IPv4 payload length, host order */ -static size_t tcp_fill_headers4(const struct ctx *c, - const struct tcp_tap_conn *conn, +static size_t tcp_fill_headers4(const struct tcp_tap_conn *conn, struct tap_hdr *taph, struct iphdr *iph, struct tcphdr *th, size_t dlen, const uint16_t *check, uint32_t seq) { const struct flowside *tapside = TAPFLOW(conn); - const struct in_addr *a4 = inany_v4(&tapside->faddr); + const struct in_addr *src4 = inany_v4(&tapside->faddr); + const struct in_addr *dst4 = inany_v4(&tapside->eaddr); size_t l4len = dlen + sizeof(*th); size_t l3len = l4len + sizeof(*iph); - ASSERT(a4); + ASSERT(src4 && dst4); iph->tot_len = htons(l3len); - iph->saddr = a4->s_addr; - iph->daddr = c->ip4.addr_seen.s_addr; + iph->saddr = src4->s_addr; + iph->daddr = dst4->s_addr; iph->check = check ? *check : - csum_ip4_header(l3len, IPPROTO_TCP, - *a4, c->ip4.addr_seen); + csum_ip4_header(l3len, IPPROTO_TCP, *src4, *dst4); tcp_fill_header(th, conn, seq); @@ -1103,7 +1101,6 @@ static size_t tcp_fill_headers4(const struct ctx *c, /** * tcp_fill_headers6() - Fill 802.3, IPv6, TCP headers in pre-cooked buffers - * @c: Execution context * @conn: Connection pointer * @taph: tap backend specific header * @ip6h: Pointer to IPv6 header @@ -1114,8 +1111,7 @@ static size_t tcp_fill_headers4(const struct ctx *c, * * Return: The IPv6 payload length, host order */ -static size_t tcp_fill_headers6(const struct ctx *c, - const struct tcp_tap_conn *conn, +static size_t tcp_fill_headers6(const struct tcp_tap_conn *conn, struct tap_hdr *taph, struct ipv6hdr *ip6h, struct tcphdr *th, size_t dlen, uint32_t seq) @@ -1125,10 +1121,7 @@ static size_t tcp_fill_headers6(const struct ctx *c, ip6h->payload_len = htons(l4len); ip6h->saddr = tapside->faddr.a6; - if (IN6_IS_ADDR_LINKLOCAL(&ip6h->saddr)) - ip6h->daddr = c->ip6.addr_ll_seen; - else - ip6h->daddr = c->ip6.addr_seen; + ip6h->daddr = tapside->eaddr.a6; ip6h->hop_limit = 255; ip6h->version = 6; @@ -1149,7 +1142,6 @@ static size_t tcp_fill_headers6(const struct ctx *c, /** * tcp_l2_buf_fill_headers() - Fill 802.3, IP, TCP headers in pre-cooked buffers - * @c: Execution context * @conn: Connection pointer * @iov: Pointer to an array of iovec of TCP pre-cooked buffers * @dlen: TCP payload length @@ -1158,8 +1150,7 @@ static size_t tcp_fill_headers6(const struct ctx *c, * * Return: IP payload length, host order */ -size_t tcp_l2_buf_fill_headers(const struct ctx *c, - const struct tcp_tap_conn *conn, +size_t tcp_l2_buf_fill_headers(const struct tcp_tap_conn *conn, struct iovec *iov, size_t dlen, const uint16_t *check, uint32_t seq) { @@ -1167,13 +1158,13 @@ size_t tcp_l2_buf_fill_headers(const struct ctx *c, const struct in_addr *a4 = inany_v4(&tapside->faddr); if (a4) { - return tcp_fill_headers4(c, conn, iov[TCP_IOV_TAP].iov_base, + return tcp_fill_headers4(conn, iov[TCP_IOV_TAP].iov_base, iov[TCP_IOV_IP].iov_base, iov[TCP_IOV_PAYLOAD].iov_base, dlen, check, seq); } - return tcp_fill_headers6(c, conn, iov[TCP_IOV_TAP].iov_base, + return tcp_fill_headers6(conn, iov[TCP_IOV_TAP].iov_base, iov[TCP_IOV_IP].iov_base, iov[TCP_IOV_PAYLOAD].iov_base, dlen, seq); @@ -1476,17 +1467,11 @@ static void tcp_seq_init(const struct ctx *c, struct tcp_tap_conn *conn, { struct siphash_state state = SIPHASH_INIT(c->hash_secret); const struct flowside *tapside = TAPFLOW(conn); - union inany_addr aany; uint64_t hash; uint32_t ns; - if (CONN_V4(conn)) - inany_from_af(&aany, AF_INET, &c->ip4.addr); - else - inany_from_af(&aany, AF_INET6, &c->ip6.addr); - inany_siphash_feed(&state, &tapside->faddr); - inany_siphash_feed(&state, &aany); + inany_siphash_feed(&state, &tapside->eaddr); hash = siphash_final(&state, 36, (uint64_t)tapside->fport << 16 | tapside->eport); |