diff options
Diffstat (limited to 'udp.c')
| -rw-r--r-- | udp.c | 373 |
1 files changed, 242 insertions, 131 deletions
@@ -109,8 +109,8 @@ #include "pcap.h" #include "log.h" #include "flow_table.h" - -#define UDP_MAX_FRAMES 32 /* max # of frames to receive at once */ +#include "udp_internal.h" +#include "udp_vu.h" /* "Spliced" sockets indexed by bound port (host order) */ static int udp_splice_ns [IP_VERSIONS][NUM_PORTS]; @@ -118,20 +118,8 @@ static int udp_splice_init[IP_VERSIONS][NUM_PORTS]; /* Static buffers */ -/** - * struct udp_payload_t - UDP header and data for inbound messages - * @uh: UDP header - * @data: UDP data - */ -static struct udp_payload_t { - struct udphdr uh; - char data[USHRT_MAX - sizeof(struct udphdr)]; -#ifdef __AVX2__ -} __attribute__ ((packed, aligned(32))) -#else -} __attribute__ ((packed, aligned(__alignof__(unsigned int)))) -#endif -udp_payload[UDP_MAX_FRAMES]; +/* UDP header and data for inbound messages */ +static struct udp_payload_t udp_payload[UDP_MAX_FRAMES]; /* Ethernet header for IPv4 frames */ static struct ethhdr udp4_eth_hdr; @@ -169,17 +157,16 @@ udp_meta[UDP_MAX_FRAMES]; * @UDP_NUM_IOVS the number of entries in the iovec array */ enum udp_iov_idx { - UDP_IOV_TAP = 0, - UDP_IOV_ETH = 1, - UDP_IOV_IP = 2, - UDP_IOV_PAYLOAD = 3, - UDP_NUM_IOVS + UDP_IOV_TAP, + UDP_IOV_ETH, + UDP_IOV_IP, + UDP_IOV_PAYLOAD, + UDP_NUM_IOVS, }; /* IOVs and msghdr arrays for receiving datagrams from sockets */ static struct iovec udp_iov_recv [UDP_MAX_FRAMES]; -static struct mmsghdr udp4_mh_recv [UDP_MAX_FRAMES]; -static struct mmsghdr udp6_mh_recv [UDP_MAX_FRAMES]; +static struct mmsghdr udp_mh_recv [UDP_MAX_FRAMES]; /* IOVs and msghdr arrays for sending "spliced" datagrams to sockets */ static union sockaddr_inany udp_splice_to; @@ -222,6 +209,7 @@ void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s) static void udp_iov_init_one(const struct ctx *c, size_t i) { struct udp_payload_t *payload = &udp_payload[i]; + struct msghdr *mh = &udp_mh_recv[i].msg_hdr; struct udp_meta_t *meta = &udp_meta[i]; struct iovec *siov = &udp_iov_recv[i]; struct iovec *tiov = udp_l2_iov[i]; @@ -236,27 +224,10 @@ static void udp_iov_init_one(const struct ctx *c, size_t i) tiov[UDP_IOV_TAP] = tap_hdr_iov(c, &meta->taph); tiov[UDP_IOV_PAYLOAD].iov_base = payload; - /* It's useful to have separate msghdr arrays for receiving. Otherwise, - * an IPv4 recv() will alter msg_namelen, so we'd have to reset it every - * time or risk truncating the address on future IPv6 recv()s. - */ - if (c->ifi4) { - struct msghdr *mh = &udp4_mh_recv[i].msg_hdr; - - mh->msg_name = &meta->s_in; - mh->msg_namelen = sizeof(struct sockaddr_in); - mh->msg_iov = siov; - mh->msg_iovlen = 1; - } - - if (c->ifi6) { - struct msghdr *mh = &udp6_mh_recv[i].msg_hdr; - - mh->msg_name = &meta->s_in; - mh->msg_namelen = sizeof(struct sockaddr_in6); - mh->msg_iov = siov; - mh->msg_iovlen = 1; - } + mh->msg_name = &meta->s_in; + mh->msg_namelen = sizeof(meta->s_in); + mh->msg_iov = siov; + mh->msg_iovlen = 1; } /** @@ -311,17 +282,19 @@ static void udp_splice_send(const struct ctx *c, size_t start, size_t n, /** * udp_update_hdr4() - Update headers for one IPv4 datagram - * @ip4h: Pre-filled IPv4 header (except for tot_len and saddr) - * @bp: Pointer to udp_payload_t to update - * @toside: Flowside for destination side - * @dlen: Length of UDP payload + * @ip4h: Pre-filled IPv4 header (except for tot_len and saddr) + * @bp: Pointer to udp_payload_t to update + * @toside: Flowside for destination side + * @dlen: Length of UDP payload + * @no_udp_csum: Do not set UDP checksum * * Return: size of IPv4 payload (UDP header + data) */ -static size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, - const struct flowside *toside, size_t dlen) +size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum) { - const struct in_addr *src = inany_v4(&toside->faddr); + const struct in_addr *src = inany_v4(&toside->oaddr); const struct in_addr *dst = inany_v4(&toside->eaddr); size_t l4len = dlen + sizeof(bp->uh); size_t l3len = l4len + sizeof(*ip4h); @@ -333,39 +306,64 @@ static size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, ip4h->saddr = src->s_addr; ip4h->check = csum_ip4_header(l3len, IPPROTO_UDP, *src, *dst); - bp->uh.source = htons(toside->fport); + bp->uh.source = htons(toside->oport); bp->uh.dest = htons(toside->eport); bp->uh.len = htons(l4len); - csum_udp4(&bp->uh, *src, *dst, bp->data, dlen); + if (no_udp_csum) { + bp->uh.check = 0; + } else { + const struct iovec iov = { + .iov_base = bp->data, + .iov_len = dlen + }; + struct iov_tail data = IOV_TAIL(&iov, 1, 0); + csum_udp4(&bp->uh, *src, *dst, &data); + } return l4len; } /** * udp_update_hdr6() - Update headers for one IPv6 datagram - * @ip6h: Pre-filled IPv6 header (except for payload_len and addresses) - * @bp: Pointer to udp_payload_t to update - * @toside: Flowside for destination side - * @dlen: Length of UDP payload + * @ip6h: Pre-filled IPv6 header (except for payload_len and + * addresses) + * @bp: Pointer to udp_payload_t to update + * @toside: Flowside for destination side + * @dlen: Length of UDP payload + * @no_udp_csum: Do not set UDP checksum * * Return: size of IPv6 payload (UDP header + data) */ -static size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, - const struct flowside *toside, size_t dlen) +size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum) { uint16_t l4len = dlen + sizeof(bp->uh); ip6h->payload_len = htons(l4len); ip6h->daddr = toside->eaddr.a6; - ip6h->saddr = toside->faddr.a6; + ip6h->saddr = toside->oaddr.a6; ip6h->version = 6; ip6h->nexthdr = IPPROTO_UDP; ip6h->hop_limit = 255; - bp->uh.source = htons(toside->fport); + bp->uh.source = htons(toside->oport); bp->uh.dest = htons(toside->eport); bp->uh.len = ip6h->payload_len; - csum_udp6(&bp->uh, &toside->faddr.a6, &toside->eaddr.a6, bp->data, dlen); + if (no_udp_csum) { + /* 0 is an invalid checksum for UDP IPv6 and dropped by + * the kernel stack, even if the checksum is disabled by virtio + * flags. We need to put any non-zero value here. + */ + bp->uh.check = 0xffff; + } else { + const struct iovec iov = { + .iov_base = bp->data, + .iov_len = dlen + }; + struct iov_tail data = IOV_TAIL(&iov, 1, 0); + csum_udp6(&bp->uh, &toside->oaddr.a6, &toside->eaddr.a6, &data); + } return l4len; } @@ -375,23 +373,27 @@ static size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, * @mmh: Receiving mmsghdr array * @idx: Index of the datagram to prepare * @toside: Flowside for destination side + * @no_udp_csum: Do not set UDP checksum */ -static void udp_tap_prepare(const struct mmsghdr *mmh, unsigned idx, - const struct flowside *toside) +static void udp_tap_prepare(const struct mmsghdr *mmh, + unsigned idx, const struct flowside *toside, + bool no_udp_csum) { struct iovec (*tap_iov)[UDP_NUM_IOVS] = &udp_l2_iov[idx]; struct udp_payload_t *bp = &udp_payload[idx]; struct udp_meta_t *bm = &udp_meta[idx]; size_t l4len; - if (!inany_v4(&toside->eaddr) || !inany_v4(&toside->faddr)) { - l4len = udp_update_hdr6(&bm->ip6h, bp, toside, mmh[idx].msg_len); + if (!inany_v4(&toside->eaddr) || !inany_v4(&toside->oaddr)) { + l4len = udp_update_hdr6(&bm->ip6h, bp, toside, + mmh[idx].msg_len, no_udp_csum); tap_hdr_update(&bm->taph, l4len + sizeof(bm->ip6h) + sizeof(udp6_eth_hdr)); (*tap_iov)[UDP_IOV_ETH] = IOV_OF_LVALUE(udp6_eth_hdr); (*tap_iov)[UDP_IOV_IP] = IOV_OF_LVALUE(bm->ip6h); } else { - l4len = udp_update_hdr4(&bm->ip4h, bp, toside, mmh[idx].msg_len); + l4len = udp_update_hdr4(&bm->ip4h, bp, toside, + mmh[idx].msg_len, no_udp_csum); tap_hdr_update(&bm->taph, l4len + sizeof(bm->ip4h) + sizeof(udp4_eth_hdr)); (*tap_iov)[UDP_IOV_ETH] = IOV_OF_LVALUE(udp4_eth_hdr); @@ -404,11 +406,12 @@ static void udp_tap_prepare(const struct mmsghdr *mmh, unsigned idx, * udp_sock_recverr() - Receive and clear an error from a socket * @s: Socket to receive from * - * Return: true if errors received and processed, false if no more errors + * Return: 1 if error received and processed, 0 if no more errors in queue, < 0 + * if there was an error reading the queue * * #syscalls recvmsg */ -static bool udp_sock_recverr(int s) +static int udp_sock_recverr(int s) { const struct sock_extended_err *ee; const struct cmsghdr *hdr; @@ -425,14 +428,16 @@ static bool udp_sock_recverr(int s) rc = recvmsg(s, &mh, MSG_ERRQUEUE); if (rc < 0) { - if (errno != EAGAIN && errno != EWOULDBLOCK) - err_perror("Failed to read error queue"); - return false; + if (errno == EAGAIN || errno == EWOULDBLOCK) + return 0; + + err_perror("UDP: Failed to read error queue"); + return -1; } if (!(mh.msg_flags & MSG_ERRQUEUE)) { err("Missing MSG_ERRQUEUE flag reading error queue"); - return false; + return -1; } hdr = CMSG_FIRSTHDR(&mh); @@ -441,16 +446,63 @@ static bool udp_sock_recverr(int s) (hdr->cmsg_level == IPPROTO_IPV6 && hdr->cmsg_type == IPV6_RECVERR))) { err("Unexpected cmsg reading error queue"); - return false; + return -1; } ee = (const struct sock_extended_err *)CMSG_DATA(hdr); /* TODO: When possible propagate and otherwise handle errors */ debug("%s error on UDP socket %i: %s", - str_ee_origin(ee), s, strerror(ee->ee_errno)); + str_ee_origin(ee), s, strerror_(ee->ee_errno)); + + return 1; +} - return true; +/** + * udp_sock_errs() - Process errors on a socket + * @c: Execution context + * @s: Socket to receive from + * @events: epoll events bitmap + * + * Return: Number of errors handled, or < 0 if we have an unrecoverable error + */ +int udp_sock_errs(const struct ctx *c, int s, uint32_t events) +{ + unsigned n_err = 0; + socklen_t errlen; + int rc, err; + + ASSERT(!c->no_udp); + + if (!(events & EPOLLERR)) + return 0; /* Nothing to do */ + + /* Empty the error queue */ + while ((rc = udp_sock_recverr(s)) > 0) + n_err += rc; + + if (rc < 0) + return -1; /* error reading error, unrecoverable */ + + errlen = sizeof(err); + if (getsockopt(s, SOL_SOCKET, SO_ERROR, &err, &errlen) < 0 || + errlen != sizeof(err)) { + err_perror("Error reading SO_ERROR"); + return -1; /* error reading error, unrecoverable */ + } + + if (err) { + debug("Unqueued error on UDP socket %i: %s", s, strerror_(err)); + n_err++; + } + + if (!n_err) { + /* EPOLLERR, but no errors to clear !? */ + err("EPOLLERR event without reported errors on socket %i", s); + return -1; /* no way to clear, unrecoverable */ + } + + return n_err; } /** @@ -460,7 +512,9 @@ static bool udp_sock_recverr(int s) * @events: epoll events bitmap * @mmh mmsghdr array to receive into * - * #syscalls recvmmsg + * Return: Number of datagrams received + * + * #syscalls recvmmsg arm:recvmmsg_time64 i686:recvmmsg_time64 */ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, struct mmsghdr *mmh) @@ -476,12 +530,6 @@ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, ASSERT(!c->no_udp); - /* Clear any errors first */ - if (events & EPOLLERR) { - while (udp_sock_recverr(s)) - ; - } - if (!(events & EPOLLIN)) return 0; @@ -495,7 +543,7 @@ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, } /** - * udp_listen_sock_handler() - Handle new data from socket + * udp_buf_listen_sock_handler() - Handle new data from socket * @c: Execution context * @ref: epoll reference * @events: epoll events bitmap @@ -503,13 +551,21 @@ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, * * #syscalls recvmmsg */ -void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, - uint32_t events, const struct timespec *now) +static void udp_buf_listen_sock_handler(const struct ctx *c, + union epoll_ref ref, uint32_t events, + const struct timespec *now) { - struct mmsghdr *mmh_recv = ref.udp.v6 ? udp6_mh_recv : udp4_mh_recv; + const socklen_t sasize = sizeof(udp_meta[0].s_in); int n, i; - if ((n = udp_sock_recv(c, ref.fd, events, mmh_recv)) <= 0) + if (udp_sock_errs(c, ref.fd, events) < 0) { + err("UDP: Unrecoverable error on listening socket:" + " (%s port %hu)", pif_name(ref.udp.pif), ref.udp.port); + /* FIXME: what now? close/re-open socket? */ + return; + } + + if ((n = udp_sock_recv(c, ref.fd, events, udp_mh_recv)) <= 0) return; /* We divide datagrams into batches based on how we need to send them, @@ -518,6 +574,7 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, * populate it one entry *ahead* of the loop counter. */ udp_meta[0].tosidx = udp_flow_from_sock(c, ref, &udp_meta[0].s_in, now); + udp_mh_recv[0].msg_hdr.msg_namelen = sasize; for (i = 0; i < n; ) { flow_sidx_t batchsidx = udp_meta[i].tosidx; uint8_t batchpif = pif_at_sidx(batchsidx); @@ -525,10 +582,11 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, do { if (pif_is_socket(batchpif)) { - udp_splice_prepare(mmh_recv, i); + udp_splice_prepare(udp_mh_recv, i); } else if (batchpif == PIF_TAP) { - udp_tap_prepare(mmh_recv, i, - flowside_at_sidx(batchsidx)); + udp_tap_prepare(udp_mh_recv, i, + flowside_at_sidx(batchsidx), + false); } if (++i >= n) @@ -537,6 +595,7 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, udp_meta[i].tosidx = udp_flow_from_sock(c, ref, &udp_meta[i].s_in, now); + udp_mh_recv[i].msg_hdr.msg_namelen = sasize; } while (flow_sidx_eq(udp_meta[i].tosidx, batchsidx)); if (pif_is_socket(batchpif)) { @@ -561,7 +620,26 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, } /** - * udp_reply_sock_handler() - Handle new data from flow specific socket + * udp_listen_sock_handler() - Handle new data from socket + * @c: Execution context + * @ref: epoll reference + * @events: epoll events bitmap + * @now: Current timestamp + */ +void udp_listen_sock_handler(const struct ctx *c, + union epoll_ref ref, uint32_t events, + const struct timespec *now) +{ + if (c->mode == MODE_VU) { + udp_vu_listen_sock_handler(c, ref, events, now); + return; + } + + udp_buf_listen_sock_handler(c, ref, events, now); +} + +/** + * udp_buf_reply_sock_handler() - Handle new data from flow specific socket * @c: Execution context * @ref: epoll reference * @events: epoll events bitmap @@ -569,22 +647,28 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, * * #syscalls recvmmsg */ -void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, - uint32_t events, const struct timespec *now) +static void udp_buf_reply_sock_handler(const struct ctx *c, union epoll_ref ref, + uint32_t events, + const struct timespec *now) { - const struct flowside *fromside = flowside_at_sidx(ref.flowside); flow_sidx_t tosidx = flow_sidx_opposite(ref.flowside); const struct flowside *toside = flowside_at_sidx(tosidx); struct udp_flow *uflow = udp_at_sidx(ref.flowside); - int from_s = uflow->s[ref.flowside.sidei]; - bool v6 = !inany_v4(&fromside->eaddr); - struct mmsghdr *mmh_recv = v6 ? udp6_mh_recv : udp4_mh_recv; uint8_t topif = pif_at_sidx(tosidx); - int n, i; + int n, i, from_s; ASSERT(!c->no_udp && uflow); - if ((n = udp_sock_recv(c, from_s, events, mmh_recv)) <= 0) + from_s = uflow->s[ref.flowside.sidei]; + + if (udp_sock_errs(c, from_s, events) < 0) { + flow_err(uflow, "Unrecoverable error on reply socket"); + flow_err_details(uflow); + udp_flow_close(c, uflow); + return; + } + + if ((n = udp_sock_recv(c, from_s, events, udp_mh_recv)) <= 0) return; flow_trace(uflow, "Received %d datagrams on reply socket", n); @@ -592,9 +676,11 @@ void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, for (i = 0; i < n; i++) { if (pif_is_socket(topif)) - udp_splice_prepare(mmh_recv, i); + udp_splice_prepare(udp_mh_recv, i); else if (topif == PIF_TAP) - udp_tap_prepare(mmh_recv, i, toside); + udp_tap_prepare(udp_mh_recv, i, toside, false); + /* Restore sockaddr length clobbered by recvmsg() */ + udp_mh_recv[i].msg_hdr.msg_namelen = sizeof(udp_meta[i].s_in); } if (pif_is_socket(topif)) { @@ -610,6 +696,24 @@ void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, } /** + * udp_reply_sock_handler() - Handle new data from flow specific socket + * @c: Execution context + * @ref: epoll reference + * @events: epoll events bitmap + * @now: Current timestamp + */ +void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, + uint32_t events, const struct timespec *now) +{ + if (c->mode == MODE_VU) { + udp_vu_reply_sock_handler(c, ref, events, now); + return; + } + + udp_buf_reply_sock_handler(c, ref, events, now); +} + +/** * udp_tap_handler() - Handle packets from tap * @c: Execution context * @pif: pif on which the packet is arriving @@ -719,55 +823,62 @@ int udp_tap_handler(const struct ctx *c, uint8_t pif, * udp_sock_init() - Initialise listening sockets for a given port * @c: Execution context * @ns: In pasta mode, if set, bind with loopback address in namespace - * @af: Address family to select a specific IP version, or AF_UNSPEC * @addr: Pointer to address for binding, NULL if not configured * @ifname: Name of interface to bind to, NULL if not configured * @port: Port, host order * * Return: 0 on (partial) success, negative error code on (complete) failure */ -int udp_sock_init(const struct ctx *c, int ns, sa_family_t af, - const void *addr, const char *ifname, in_port_t port) +int udp_sock_init(const struct ctx *c, int ns, const union inany_addr *addr, + const char *ifname, in_port_t port) { - union udp_listen_epoll_ref uref = { .port = port }; - int s, r4 = FD_REF_MAX + 1, r6 = FD_REF_MAX + 1; + union udp_listen_epoll_ref uref = { + .pif = ns ? PIF_SPLICE : PIF_HOST, + .port = port, + }; + int r4 = FD_REF_MAX + 1, r6 = FD_REF_MAX + 1; ASSERT(!c->no_udp); - if (ns) - uref.pif = PIF_SPLICE; - else - uref.pif = PIF_HOST; + if (!addr && c->ifi4 && c->ifi6 && !ns) { + int s; - if ((af == AF_INET || af == AF_UNSPEC) && c->ifi4) { - uref.v6 = 0; + /* Attempt to get a dual stack socket */ + s = pif_sock_l4(c, EPOLL_TYPE_UDP_LISTEN, PIF_HOST, + NULL, ifname, port, uref.u32); + udp_splice_init[V4][port] = s < 0 ? -1 : s; + udp_splice_init[V6][port] = s < 0 ? -1 : s; + if (IN_INTERVAL(0, FD_REF_MAX, s)) + return 0; + } + if ((!addr || inany_v4(addr)) && c->ifi4) { if (!ns) { - r4 = s = sock_l4(c, AF_INET, EPOLL_TYPE_UDP_LISTEN, - addr, ifname, port, uref.u32); + r4 = pif_sock_l4(c, EPOLL_TYPE_UDP_LISTEN, PIF_HOST, + addr ? addr : &inany_any4, ifname, + port, uref.u32); - udp_splice_init[V4][port] = s < 0 ? -1 : s; + udp_splice_init[V4][port] = r4 < 0 ? -1 : r4; } else { - r4 = s = sock_l4(c, AF_INET, EPOLL_TYPE_UDP_LISTEN, - &in4addr_loopback, - ifname, port, uref.u32); - udp_splice_ns[V4][port] = s < 0 ? -1 : s; + r4 = pif_sock_l4(c, EPOLL_TYPE_UDP_LISTEN, PIF_SPLICE, + &inany_loopback4, ifname, + port, uref.u32); + udp_splice_ns[V4][port] = r4 < 0 ? -1 : r4; } } - if ((af == AF_INET6 || af == AF_UNSPEC) && c->ifi6) { - uref.v6 = 1; - + if ((!addr || !inany_v4(addr)) && c->ifi6) { if (!ns) { - r6 = s = sock_l4(c, AF_INET6, EPOLL_TYPE_UDP_LISTEN, - addr, ifname, port, uref.u32); + r6 = pif_sock_l4(c, EPOLL_TYPE_UDP_LISTEN, PIF_HOST, + addr ? addr : &inany_any6, ifname, + port, uref.u32); - udp_splice_init[V6][port] = s < 0 ? -1 : s; + udp_splice_init[V6][port] = r6 < 0 ? -1 : r6; } else { - r6 = s = sock_l4(c, AF_INET6, EPOLL_TYPE_UDP_LISTEN, - &in6addr_loopback, - ifname, port, uref.u32); - udp_splice_ns[V6][port] = s < 0 ? -1 : s; + r6 = pif_sock_l4(c, EPOLL_TYPE_UDP_LISTEN, PIF_SPLICE, + &inany_loopback6, ifname, + port, uref.u32); + udp_splice_ns[V6][port] = r6 < 0 ? -1 : r6; } } @@ -834,7 +945,7 @@ static void udp_port_rebind(struct ctx *c, bool outbound) if ((c->ifi4 && socks[V4][port] == -1) || (c->ifi6 && socks[V6][port] == -1)) - udp_sock_init(c, outbound, AF_UNSPEC, NULL, NULL, port); + udp_sock_init(c, outbound, NULL, NULL, port); } } |