diff options
Diffstat (limited to 'udp.c')
| -rw-r--r-- | udp.c | 40 |
1 files changed, 7 insertions, 33 deletions
@@ -48,7 +48,8 @@ * - forward direction: 127.0.0.1:5000 -> 127.0.0.1:80 in init from bound * socket s, with epoll reference: index = 80, splice = UDP_TO_NS * - if udp_splice_to_ns[V4][5000].target_sock: - * - send packet to udp_splice_to_ns[V4][5000].target_sock + * - send packet to udp_splice_to_ns[V4][5000].target_sock, with + * destination port 80 * - otherwise: * - create new socket udp_splice_to_ns[V4][5000].target_sock * - bind in namespace to 127.0.0.1:5000 @@ -71,7 +72,8 @@ * - forward direction: 127.0.0.1:2000 -> 127.0.0.1:22 in namespace from bound * socket s, with epoll reference: index = 22, splice = UDP_TO_INIT * - if udp4_splice_to_init[V4][2000].target_sock: - * - send packet to udp_splice_to_init[V4][2000].target_sock + * - send packet to udp_splice_to_init[V4][2000].target_sock, with + * destination port 22 * - otherwise: * - create new socket udp_splice_to_init[V4][2000].target_sock * - bind in init to 127.0.0.1:2000 @@ -244,9 +246,6 @@ static struct mmsghdr udp6_l2_mh_tap [UDP_TAP_FRAMES_MEM]; static struct iovec udp_iov_recv [UDP_SPLICE_FRAMES]; static struct mmsghdr udp_mmh_recv [UDP_SPLICE_FRAMES]; -static struct iovec udp_iov_send [UDP_SPLICE_FRAMES]; -static struct mmsghdr udp_mmh_send [UDP_SPLICE_FRAMES]; - static struct iovec udp_iov_sendto [UDP_SPLICE_FRAMES]; static struct mmsghdr udp_mmh_sendto [UDP_SPLICE_FRAMES]; @@ -529,7 +528,7 @@ static int udp_splice_connect_ns(void *arg) static void udp_sock_handler_splice(const struct ctx *c, union epoll_ref ref, uint32_t events, const struct timespec *now) { - in_port_t src, dst = ref.r.p.udp.udp.port, send_dst = 0; + in_port_t src, dst = ref.r.p.udp.udp.port; struct msghdr *mh = &udp_mmh_recv[0].msg_hdr; struct sockaddr_storage *sa_s = mh->msg_name; int s, v6 = ref.r.p.udp.udp.v6, n, i; @@ -570,8 +569,6 @@ static void udp_sock_handler_splice(const struct ctx *c, union epoll_ref ref, case UDP_BACK_TO_INIT: if (!(s = udp_splice_to_ns[v6][dst].orig_sock)) return; - - send_dst = dst; break; case UDP_TO_INIT: src += c->udp.fwd_in.rdelta[src]; @@ -587,25 +584,11 @@ static void udp_sock_handler_splice(const struct ctx *c, union epoll_ref ref, case UDP_BACK_TO_NS: if (!(s = udp_splice_to_init[v6][dst].orig_sock)) return; - - send_dst = dst; break; default: return; } - if (ref.r.p.udp.udp.splice == UDP_TO_NS || - ref.r.p.udp.udp.splice == UDP_TO_INIT) { - for (i = 0; i < n; i++) { - struct msghdr *mh_s = &udp_mmh_send[i].msg_hdr; - - mh_s->msg_iov->iov_len = udp_mmh_recv[i].msg_len; - } - - sendmmsg(s, udp_mmh_send, n, MSG_NOSIGNAL); - return; - } - for (i = 0; i < n; i++) { struct msghdr *mh_s = &udp_mmh_sendto[i].msg_hdr; @@ -617,7 +600,7 @@ static void udp_sock_handler_splice(const struct ctx *c, union epoll_ref ref, ((struct sockaddr_in6) { .sin6_family = AF_INET6, .sin6_addr = IN6ADDR_LOOPBACK_INIT, - .sin6_port = htons(send_dst), + .sin6_port = htons(dst), .sin6_scope_id = 0, }); } else { @@ -625,7 +608,7 @@ static void udp_sock_handler_splice(const struct ctx *c, union epoll_ref ref, ((struct sockaddr_in) { .sin_family = AF_INET, .sin_addr = { .s_addr = htonl(INADDR_LOOPBACK) }, - .sin_port = htons(send_dst), + .sin_port = htons(dst), .sin_zero = { 0 }, }); } @@ -1228,15 +1211,6 @@ static void udp_splice_iov_init(void) iov->iov_len = sizeof(udp_splice_buf[i]); } - for (i = 0, h = udp_mmh_send; i < UDP_SPLICE_FRAMES; i++, h++) { - struct msghdr *mh = &h->msg_hdr; - - mh->msg_iov = &udp_iov_send[i]; - mh->msg_iovlen = 1; - } - for (i = 0, iov = udp_iov_send; i < UDP_SPLICE_FRAMES; i++, iov++) - iov->iov_base = udp_splice_buf[i]; - for (i = 0, h = udp_mmh_sendto; i < UDP_SPLICE_FRAMES; i++, h++) { struct msghdr *mh = &h->msg_hdr; |