diff options
Diffstat (limited to 'sysdep/unix/io.c')
| -rw-r--r-- | sysdep/unix/io.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c index 50992fb..c86c120 100644 --- a/sysdep/unix/io.c +++ b/sysdep/unix/io.c @@ -30,6 +30,12 @@ #include "lib/unix.h" #include "lib/sysio.h" +/* Maximum number of calls of rx/tx handler for one socket in one + * select iteration. Should be small enough to not monopolize CPU by + * one protocol instance. + */ +#define MAX_STEPS 4 + /* * Tracked Files */ @@ -593,6 +599,7 @@ sk_new(pool *p) s->saddr = s->daddr = IPA_NONE; s->sport = s->dport = 0; s->tos = s->ttl = -1; + s->flags = 0; s->iface = NULL; s->rbuf = NULL; s->rx_hook = NULL; @@ -703,7 +710,13 @@ sk_setup(sock *s) if ((s->tos >= 0) && setsockopt(fd, SOL_IP, IP_TOS, &s->tos, sizeof(s->tos)) < 0) WARN("IP_TOS"); #endif - + +#ifdef IPV6 + int v = 1; + if ((s->flags & SKF_V6ONLY) && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &v, sizeof(v)) < 0) + WARN("IPV6_V6ONLY"); +#endif + if (s->ttl >= 0) err = sk_set_ttl_int(s); else @@ -1335,22 +1348,27 @@ io_loop(void) { sock *s = current_sock; int e; + int steps = MAX_STEPS; if (FD_ISSET(s->fd, &rd) && s->rx_hook) do { + steps--; e = sk_read(s); if (s != current_sock) goto next; } - while (e && s->rx_hook); + while (e && s->rx_hook && steps); + + steps = MAX_STEPS; if (FD_ISSET(s->fd, &wr)) do { + steps--; e = sk_write(s); if (s != current_sock) goto next; } - while (e); + while (e && steps); current_sock = sk_next(s); next: ; } |