diff options
Diffstat (limited to 'tap.c')
| -rw-r--r-- | tap.c | 19 |
1 files changed, 12 insertions, 7 deletions
@@ -84,7 +84,8 @@ int tap_send(const struct ctx *c, const void *data, size_t len, int vnet_pre) } else { uint32_t vnet_len = htonl(len); - send(c->fd_tap, &vnet_len, 4, flags); + if (send(c->fd_tap, &vnet_len, 4, flags) < 0) + return -1; } return send(c->fd_tap, data, len, flags); @@ -150,7 +151,8 @@ void tap_ip_send(const struct ctx *c, const struct in6_addr *src, uint8_t proto, ih->checksum = csum_unaligned(ih, len, 0); } - tap_send(c, buf, len + sizeof(*iph) + sizeof(*eh), 1); + if (tap_send(c, buf, len + sizeof(*iph) + sizeof(*eh), 1) < 0) + debug("tap: failed to send %lu bytes (IPv4)", len); } else { struct ipv6hdr *ip6h = (struct ipv6hdr *)(eh + 1); char *data = (char *)(ip6h + 1); @@ -201,7 +203,8 @@ void tap_ip_send(const struct ctx *c, const struct in6_addr *src, uint8_t proto, ip6h->flow_lbl[2] = (flow >> 0) & 0xff; } - tap_send(c, buf, len + sizeof(*ip6h) + sizeof(*eh), 1); + if (tap_send(c, buf, len + sizeof(*ip6h) + sizeof(*eh), 1) < 1) + debug("tap: failed to send %lu bytes (IPv6)", len); } } @@ -862,11 +865,13 @@ static void tap_sock_unix_new(struct ctx *c) c->fd_tap = accept4(c->fd_tap_listen, NULL, NULL, 0); - if (!c->low_rmem) - setsockopt(c->fd_tap, SOL_SOCKET, SO_RCVBUF, &v, sizeof(v)); + if (!c->low_rmem && + setsockopt(c->fd_tap, SOL_SOCKET, SO_RCVBUF, &v, sizeof(v))) + trace("tap: failed to set SO_RCVBUF to %i", v); - if (!c->low_wmem) - setsockopt(c->fd_tap, SOL_SOCKET, SO_SNDBUF, &v, sizeof(v)); + if (!c->low_wmem && + setsockopt(c->fd_tap, SOL_SOCKET, SO_SNDBUF, &v, sizeof(v))) + trace("tap: failed to set SO_SNDBUF to %i", v); ev.data.fd = c->fd_tap; ev.events = EPOLLIN | EPOLLET | EPOLLRDHUP; |