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sock: permit SO_ZEROCOPY on PF_RDS socket

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allow the application to set SO_ZEROCOPY on the underlying sk
of a PF_RDS socket

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sowmini Varadhan 2018-02-15 10:49:34 -08:00 committed by David S. Miller
parent ea8994cb01
commit 28190752c7
1 changed files with 14 additions and 11 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

13
net/core/sock.c
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@ -1049,18 +1049,21 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
break;
case SO_ZEROCOPY:
if (sk->sk_family != PF_INET && sk->sk_family != PF_INET6)
ret = -ENOTSUPP;
else if (sk->sk_protocol != IPPROTO_TCP)
if (sk->sk_family == PF_INET || sk->sk_family == PF_INET6) {
if (sk->sk_protocol != IPPROTO_TCP)
ret = -ENOTSUPP;
else if (sk->sk_state != TCP_CLOSE)
ret = -EBUSY;
else if (val < 0 || val > 1)
} else if (sk->sk_family != PF_RDS) {
ret = -ENOTSUPP;
}
if (!ret) {
if (val < 0 || val > 1)
ret = -EINVAL;
else
sock_valbool_flag(sk, SOCK_ZEROCOPY, valbool);
break;
}
default:
ret = -ENOPROTOOPT;
break;