[PATCH RFC net-next 4/6] sock: permit SO_ZEROCOPY on PF_RDS socket

[Sowmini Varadhan]

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

Signed-off-by: Sowmini Varadhan <sowmini.varad...@oracle.com>
---
 net/core/sock.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/net/core/sock.c b/net/core/sock.c
index 4f52677..f0f44b0 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1049,6 +1049,13 @@ int sock_setsockopt(struct socket *sock, int level, int 
optname,
                break;
 
        case SO_ZEROCOPY:
+               if (sk->sk_family == PF_RDS) {
+                       if (val < 0 || val > 1)
+                               ret = -EINVAL;
+                       else
+                               sock_valbool_flag(sk, SOCK_ZEROCOPY, valbool);
+                       break;
+               }
                if (sk->sk_family != PF_INET && sk->sk_family != PF_INET6)
                        ret = -ENOTSUPP;
                else if (sk->sk_protocol != IPPROTO_TCP)
-- 
1.7.1