summaryrefslogtreecommitdiffstats
path: root/net/sctp/socket.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/sctp/socket.c')
-rw-r--r--net/sctp/socket.c36
1 files changed, 31 insertions, 5 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 32f2249411f..0b338eca6dc 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -115,9 +115,17 @@ static inline int sctp_wspace(struct sctp_association *asoc)
struct sock *sk = asoc->base.sk;
int amt = 0;
- amt = sk->sk_sndbuf - asoc->sndbuf_used;
+ if (asoc->ep->sndbuf_policy) {
+ /* make sure that no association uses more than sk_sndbuf */
+ amt = sk->sk_sndbuf - asoc->sndbuf_used;
+ } else {
+ /* do socket level accounting */
+ amt = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+ }
+
if (amt < 0)
amt = 0;
+
return amt;
}
@@ -138,12 +146,21 @@ static inline void sctp_set_owner_w(struct sctp_chunk *chunk)
/* The sndbuf space is tracked per association. */
sctp_association_hold(asoc);
+ skb_set_owner_w(chunk->skb, sk);
+
chunk->skb->destructor = sctp_wfree;
/* Save the chunk pointer in skb for sctp_wfree to use later. */
*((struct sctp_chunk **)(chunk->skb->cb)) = chunk;
- asoc->sndbuf_used += SCTP_DATA_SNDSIZE(chunk);
- sk->sk_wmem_queued += SCTP_DATA_SNDSIZE(chunk);
+ asoc->sndbuf_used += SCTP_DATA_SNDSIZE(chunk) +
+ sizeof(struct sk_buff) +
+ sizeof(struct sctp_chunk);
+
+ sk->sk_wmem_queued += SCTP_DATA_SNDSIZE(chunk) +
+ sizeof(struct sk_buff) +
+ sizeof(struct sctp_chunk);
+
+ atomic_add(sizeof(struct sctp_chunk), &sk->sk_wmem_alloc);
}
/* Verify that this is a valid address. */
@@ -4422,8 +4439,17 @@ static void sctp_wfree(struct sk_buff *skb)
chunk = *((struct sctp_chunk **)(skb->cb));
asoc = chunk->asoc;
sk = asoc->base.sk;
- asoc->sndbuf_used -= SCTP_DATA_SNDSIZE(chunk);
- sk->sk_wmem_queued -= SCTP_DATA_SNDSIZE(chunk);
+ asoc->sndbuf_used -= SCTP_DATA_SNDSIZE(chunk) +
+ sizeof(struct sk_buff) +
+ sizeof(struct sctp_chunk);
+
+ sk->sk_wmem_queued -= SCTP_DATA_SNDSIZE(chunk) +
+ sizeof(struct sk_buff) +
+ sizeof(struct sctp_chunk);
+
+ atomic_sub(sizeof(struct sctp_chunk), &sk->sk_wmem_alloc);
+
+ sock_wfree(skb);
__sctp_write_space(asoc);
sctp_association_put(asoc);