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passt: Don't use getprotobynumber() in debug build

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With glibc, we can't reliably build a static binary with
getprotobynumber(), which is currently used with -DDEBUG.

Replace that with a small array of protocol strings.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2021-05-10 07:50:35 +02:00
parent 9d063569ff
commit 3c8af4819e
1 changed files with 17 additions and 3 deletions
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20
passt.c
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@ -65,6 +65,20 @@ static char pkt_buf [PKT_BUF_BYTES];
#define TIMER_INTERVAL MIN(TCP_TIMER_INTERVAL, UDP_TIMER_INTERVAL)
#ifdef DEBUG
static char *ip_proto_str[IPPROTO_SCTP + 1] = {
[IPPROTO_ICMP] = "ICMP",
[IPPROTO_TCP] = "TCP",
[IPPROTO_UDP] = "UDP",
[IPPROTO_ICMPV6] = "ICMPV6",
[IPPROTO_SCTP] = "SCTP",
};
#define IP_PROTO_STR(n) \
(((n) <= IPPROTO_SCTP && ip_proto_str[(n)]) ? ip_proto_str[(n)] : "?")
#endif
/**
* sock_unix() - Create and bind AF_UNIX socket, add to epoll list
*
@ -394,7 +408,7 @@ static int tap4_handler(struct ctx *c, struct tap_msg *msg, size_t count,
return 1;
debug("%s from tap: %s:%i -> %s:%i (%i packet%s)",
getprotobynumber(iph->protocol)->p_name,
IP_PROTO_STR(iph->protocol),
inet_ntop(AF_INET, &iph->saddr, buf_s, sizeof(buf_s)),
ntohs(uh->source),
inet_ntop(AF_INET, &iph->daddr, buf_d, sizeof(buf_d)),
@ -513,7 +527,7 @@ static int tap6_handler(struct ctx *c, struct tap_msg *msg, size_t count,
return 1;
debug("%s from tap: [%s]:%i\n\t-> [%s]:%i (%i packet%s)",
getprotobynumber(proto)->p_name,
IP_PROTO_STR(proto),
inet_ntop(AF_INET6, &ip6h->saddr, buf_s, sizeof(buf_s)),
ntohs(uh->source),
inet_ntop(AF_INET6, &ip6h->daddr, buf_d, sizeof(buf_d)),
@ -658,7 +672,7 @@ static void sock_handler(struct ctx *c, int s, uint32_t events,
return;
}
debug("%s: packet from socket %i", getprotobynumber(proto)->p_name, s);
debug("%s: packet from socket %i", IP_PROTO_STR(proto), s);
if (proto == IPPROTO_ICMP || proto == IPPROTO_ICMPV6)
icmp_sock_handler(c, s, events, pkt_buf, now);