diff options
| author | Stefano Brivio <sbrivio@redhat.com> | 2021-03-17 10:57:44 +0100 |
|---|---|---|
| committer | Stefano Brivio <sbrivio@redhat.com> | 2021-03-18 12:58:03 +0100 |
| commit | 1d807fc720bda7ec446c683bbc1a5e32897ca04e (patch) | |
| tree | 7dc59149a94817fa5eddc6aa6e132fa1a7335f19 /util.c | |
| parent | d32edee60a938c3ffdb227a94e1f3afac0e40177 (diff) | |
| download | passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar.gz passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar.bz2 passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar.lz passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar.xz passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.tar.zst passt-1d807fc720bda7ec446c683bbc1a5e32897ca04e.zip | |
passt: Introduce ICMP echo proxy
It's nice to be able to confirm connectivity using ICMP or ICMPv6
echo requests, and "ping" sockets on Linux (IPPROTO_ICMP datagram)
allow us to do that without any special capability.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -160,7 +160,8 @@ int sock_l4_add(struct ctx *c, int v, uint16_t proto, uint16_t port) const struct sockaddr *sa; int fd, sl, one = 1; - if (proto != IPPROTO_TCP && proto != IPPROTO_UDP) + if (proto != IPPROTO_TCP && proto != IPPROTO_UDP && + proto != IPPROTO_ICMP && proto != IPPROTO_ICMPV6) return -1; /* Not implemented. */ fd = socket(v == 4 ? AF_INET : AF_INET6, @@ -170,6 +171,9 @@ int sock_l4_add(struct ctx *c, int v, uint16_t proto, uint16_t port) return -1; } + if (proto == IPPROTO_ICMP || proto == IPPROTO_ICMPV6) + goto epoll_add; + if (v == 4) { sa = (const struct sockaddr *)&addr4; sl = sizeof(addr4); @@ -195,6 +199,7 @@ int sock_l4_add(struct ctx *c, int v, uint16_t proto, uint16_t port) return -1; } +epoll_add: ev.events = EPOLLIN; ev.data.fd = fd; if (epoll_ctl(c->epollfd, EPOLL_CTL_ADD, fd, &ev) == -1) { |