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authorPatrick McHardy <kaber@trash.net>2005-08-09 19:30:51 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 15:31:35 -0700
commitb0573dea1fb32ebc72ffa05980fd840df1d80860 (patch)
treeae10ad849dce6dbeec1b281fbd51214030f21902 /net/core
parentf9e815b376dc19e6afc551cd755ac64e9e42d81f (diff)
downloadop-kernel-dev-b0573dea1fb32ebc72ffa05980fd840df1d80860.zip
op-kernel-dev-b0573dea1fb32ebc72ffa05980fd840df1d80860.tar.gz
[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options
Allows overriding of sysctl_{wmem,rmrm}_max Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/sock.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 12f6d9a..51a5e7d 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -260,7 +260,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
if (val > sysctl_wmem_max)
val = sysctl_wmem_max;
-
+set_sndbuf:
sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
if ((val * 2) < SOCK_MIN_SNDBUF)
sk->sk_sndbuf = SOCK_MIN_SNDBUF;
@@ -274,6 +274,13 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
sk->sk_write_space(sk);
break;
+ case SO_SNDBUFFORCE:
+ if (!capable(CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ break;
+ }
+ goto set_sndbuf;
+
case SO_RCVBUF:
/* Don't error on this BSD doesn't and if you think
about it this is right. Otherwise apps have to
@@ -282,7 +289,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
if (val > sysctl_rmem_max)
val = sysctl_rmem_max;
-
+set_rcvbuf:
sk->sk_userlocks |= SOCK_RCVBUF_LOCK;
/* FIXME: is this lower bound the right one? */
if ((val * 2) < SOCK_MIN_RCVBUF)
@@ -291,6 +298,13 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
sk->sk_rcvbuf = val * 2;
break;
+ case SO_RCVBUFFORCE:
+ if (!capable(CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ break;
+ }
+ goto set_rcvbuf;
+
case SO_KEEPALIVE:
#ifdef CONFIG_INET
if (sk->sk_protocol == IPPROTO_TCP)
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