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| author |   Christoph Hellwig <hch@lst.de> | 2020-05-28 07:12:30 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-28 11:11:45 -0700 |
| commit | c1f9ec5776dd05eaf62cf6788ecdfc905dc8ec2b (patch) | |
| tree | a57b9eabde6a05a80239467f15256f64fe184148 /net/ipv4 | |
| parent | ipv4: add ip_sock_set_mtu_discover (diff) | |
| download | linux-dev-c1f9ec5776dd05eaf62cf6788ecdfc905dc8ec2b.tar.xz linux-dev-c1f9ec5776dd05eaf62cf6788ecdfc905dc8ec2b.zip | |
ipv4: add ip_sock_set_pktinfo
Add a helper to directly set the IP_PKTINFO sockopt from kernel
space without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index aa115be11dcf..84ec3703c909 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -608,6 +608,14 @@ int ip_sock_set_mtu_discover(struct sock *sk, int val) } EXPORT_SYMBOL(ip_sock_set_mtu_discover); +void ip_sock_set_pktinfo(struct sock *sk) +{ + lock_sock(sk); + inet_sk(sk)->cmsg_flags |= IP_CMSG_PKTINFO; + release_sock(sk); +} +EXPORT_SYMBOL(ip_sock_set_pktinfo); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket. |