netdev - [PATCH v3 net-next 3/7] sock: permit SO_ZEROCOPY on PF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <03e35c00a592f39592254de31b32afb6160007ca.1518718761.git.sowmini.varadhan@oracle.com>
Date:   Thu, 15 Feb 2018 10:49:34 -0800
From:   Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:     sowmini.varadhan@...cle.com, netdev@...r.kernel.org,
        willemdebruijn.kernel@...il.com
Cc:     davem@...emloft.net, rds-devel@....oracle.com,
        santosh.shilimkar@...cle.com
Subject: [PATCH v3 net-next 3/7] 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: Sowmini Varadhan <sowmini.varadhan@...cle.com>
---
 net/core/sock.c |   25 ++++++++++++++-----------
 1 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/net/core/sock.c b/net/core/sock.c
index e90d461..a1fa4a5 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -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)
+		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 (sk->sk_family != PF_RDS) {
 			ret = -ENOTSUPP;
-		else if (sk->sk_protocol != IPPROTO_TCP)
-			ret = -ENOTSUPP;
-		else if (sk->sk_state != TCP_CLOSE)
-			ret = -EBUSY;
-		else if (val < 0 || val > 1)
-			ret = -EINVAL;
-		else
-			sock_valbool_flag(sk, SOCK_ZEROCOPY, valbool);
-		break;
-
+		}
+		if (!ret) {
+			if (val < 0 || val > 1)
+				ret = -EINVAL;
+			else
+				sock_valbool_flag(sk, SOCK_ZEROCOPY, valbool);
+			break;
+		}
 	default:
 		ret = -ENOPROTOOPT;
 		break;
-- 
1.7.1