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Commit 28190752 authored by Sowmini Varadhan's avatar Sowmini Varadhan Committed by David S. Miller
Browse files

sock: permit SO_ZEROCOPY on PF_RDS socket 



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

Signed-off-by: default avatarSowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ea8994cb

net/core/sock.c

+14 −11
Original line number Diff line number Diff line
@@ -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;