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authorEric Dumazet <edumazet@google.com>2017-11-07 00:29:27 -0800
committerDavid S. Miller <davem@davemloft.net>2017-11-10 14:34:58 +0900
commita3dcaf17ee54f1d01d22cc2b22cab0b4f60d78cf (patch)
treeead847c4636ae85b77a1a415b53b8bf737000f4e /net/core/sock.c
parent2ea7a679ca2abd251c1ec03f20508619707e1749 (diff)
downloadlinux-a3dcaf17ee54f1d01d22cc2b22cab0b4f60d78cf.tar.bz2
net: allow per netns sysctl_rmem and sysctl_wmem for protos
As we want to gradually implement per netns sysctl_rmem and sysctl_wmem on per protocol basis, add two new fields in struct proto, and two new helpers : sk_get_wmem0() and sk_get_rmem0() First user will be TCP. Then UDP and SCTP can be easily converted, while DECNET probably wont get this support. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
-rw-r--r--net/core/sock.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 759400053110..c59bcf90d905 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2346,16 +2346,18 @@ int __sk_mem_raise_allocated(struct sock *sk, int size, int amt, int kind)
/* guarantee minimum buffer size under pressure */
if (kind == SK_MEM_RECV) {
- if (atomic_read(&sk->sk_rmem_alloc) < prot->sysctl_rmem[0])
+ if (atomic_read(&sk->sk_rmem_alloc) < sk_get_rmem0(sk, prot))
return 1;
} else { /* SK_MEM_SEND */
+ int wmem0 = sk_get_wmem0(sk, prot);
+
if (sk->sk_type == SOCK_STREAM) {
- if (sk->sk_wmem_queued < prot->sysctl_wmem[0])
+ if (sk->sk_wmem_queued < wmem0)
return 1;
- } else if (refcount_read(&sk->sk_wmem_alloc) <
- prot->sysctl_wmem[0])
+ } else if (refcount_read(&sk->sk_wmem_alloc) < wmem0) {
return 1;
+ }
}
if (sk_has_memory_pressure(sk)) {