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ggsn: Log tun fd write errors 

Change-Id: I5f681b5edcc4cf525629d2078ae0c0ffd7ebb72d
This commit is contained in:
Pau Espin 2021-06-01 12:00:21 +02:00
parent f32c6a9095
commit bd2b55679e
3 changed files with 11 additions and 4 deletions
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3
ggsn/ggsn.h
View File

@ -167,6 +167,3 @@ void ggsn_close_one_pdp(struct pdp_t *pdp);
LOGP(DGGSN, level, "GGSN(%s): " fmt, (ggsn)->cfg.name, ## args)
#define LOGPPDP(level, pdp, fmt, args...) LOGPDPX(DGGSN, level, pdp, fmt, ## args)
#define LOGTUN(level, tun, fmt, args...) \
LOGP(DTUN, level, "TUN(%s): " fmt, (tun)->devname, ## args)

9
lib/tun.c
View File

@ -318,7 +318,14 @@ int tun_decaps(struct tun_t *this)
int tun_encaps(struct tun_t *tun, void *pack, unsigned len)
{
return write(tun->fd, pack, len);
int rc;
rc = write(tun->fd, pack, len);
if (rc < 0) {
SYS_ERR(DTUN, LOGL_ERROR, errno, "TUN(%s): write() failed", tun->devname);
} else if (rc < len) {
LOGTUN(LOGL_ERROR, tun, "short write() %d < %u\n", rc, len);
}
return rc;
}
int tun_runscript(struct tun_t *tun, char *script)

3
lib/tun.h
View File

@ -59,4 +59,7 @@ extern int tun_runscript(struct tun_t *tun, char *script);
int tun_ip_local_get(const struct tun_t *tun, struct in46_prefix *prefix_list,
size_t prefix_size, int flags);
#define LOGTUN(level, tun, fmt, args...) \
LOGP(DTUN, level, "TUN(%s): " fmt, (tun)->devname, ## args)
#endif /* !_TUN_H */