diff options
| author | Sagi Grimberg <[email protected]> | 2018-01-24 18:24:24 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2018-03-26 14:53:43 +0000 |
| commit | a470143fc83924251647143ff042bd2843e296cf (patch) | |
| tree | 35ac2abc2bd810d95dcabb4797ce4eea5df9c2fb /net/core/utils.c | |
| parent | mmc: block: Delete gendisk before cleaning up the request queue (diff) | |
| download | kernel-a470143fc83924251647143ff042bd2843e296cf.tar.gz kernel-a470143fc83924251647143ff042bd2843e296cf.zip | |
net/utils: Introduce inet_addr_is_any
Can be useful to check INET_ANY address for both ipv4/ipv6 addresses.
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Sagi Grimberg <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: [email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'net/core/utils.c')
| -rw-r--r-- | net/core/utils.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/core/utils.c b/net/core/utils.c index 93066bd0305a..d47863b07a60 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -403,6 +403,29 @@ int inet_pton_with_scope(struct net *net, __kernel_sa_family_t af, } EXPORT_SYMBOL(inet_pton_with_scope); +bool inet_addr_is_any(struct sockaddr *addr) +{ + if (addr->sa_family == AF_INET6) { + struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; + const struct sockaddr_in6 in6_any = + { .sin6_addr = IN6ADDR_ANY_INIT }; + + if (!memcmp(in6->sin6_addr.s6_addr, + in6_any.sin6_addr.s6_addr, 16)) + return true; + } else if (addr->sa_family == AF_INET) { + struct sockaddr_in *in = (struct sockaddr_in *)addr; + + if (in->sin_addr.s_addr == htonl(INADDR_ANY)) + return true; + } else { + pr_warn("unexpected address family %u\n", addr->sa_family); + } + + return false; +} +EXPORT_SYMBOL(inet_addr_is_any); + void inet_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb, __be32 from, __be32 to, bool pseudohdr) { |