diff options
| author | Sabrina Dubroca <sd@queasysnail.net> | 2014-02-06 18:34:12 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-02-06 21:28:06 -0800 |
| commit | 00fe11b3c67dc670fe6391d22f1fe64e7c99a8ec (patch) | |
| tree | b2d8113facd8342e14ac70567b76c19fea0d5b8c /net/core | |
| parent | 440b87eac4ca21ccb3f56e7b1f126e0eebcc0f84 (diff) | |
| download | lwn-00fe11b3c67dc670fe6391d22f1fe64e7c99a8ec.tar.gz lwn-00fe11b3c67dc670fe6391d22f1fe64e7c99a8ec.zip | |
netpoll: fix netconsole IPv6 setup
Currently, to make netconsole start over IPv6, the source address
needs to be specified. Without a source address, netpoll_parse_options
assumes we're setting up over IPv4 and the destination IPv6 address is
rejected.
Check if the IP version has been forced by a source address before
checking for a version mismatch when parsing the destination address.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/netpoll.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index c03f3dec4763..a664f7829a6d 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -948,6 +948,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt) { char *cur=opt, *delim; int ipv6; + bool ipversion_set = false; if (*cur != '@') { if ((delim = strchr(cur, '@')) == NULL) @@ -960,6 +961,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt) cur++; if (*cur != '/') { + ipversion_set = true; if ((delim = strchr(cur, '/')) == NULL) goto parse_failed; *delim = 0; @@ -1002,7 +1004,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt) ipv6 = netpoll_parse_ip_addr(cur, &np->remote_ip); if (ipv6 < 0) goto parse_failed; - else if (np->ipv6 != (bool)ipv6) + else if (ipversion_set && np->ipv6 != (bool)ipv6) goto parse_failed; else np->ipv6 = (bool)ipv6; |