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| author |   Xin Long <lucien.xin@gmail.com> | 2018-10-17 03:07:50 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-18 11:23:47 -0700 |
| commit | 605c0ac182c34867bda71bfbcc74958aabbe2fe0 (patch) | |
| tree | 3faf0884fe9eb3899629b3c7adb895e1c695503e /net/sctp/outqueue.c | |
| parent | Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue (diff) | |
| download | wireguard-linux-605c0ac182c34867bda71bfbcc74958aabbe2fe0.tar.xz wireguard-linux-605c0ac182c34867bda71bfbcc74958aabbe2fe0.zip | |
sctp: count both sk and asoc sndbuf with skb truesize and sctp_chunk size
Now it's confusing that asoc sndbuf_used is doing memory accounting with
SCTP_DATA_SNDSIZE(chunk) + sizeof(sk_buff) + sizeof(sctp_chunk) while sk
sk_wmem_alloc is doing that with skb->truesize + sizeof(sctp_chunk).
It also causes sctp_prsctp_prune to count with a wrong freed memory when
sndbuf_policy is not set.
To make this right and also keep consistent between asoc sndbuf_used, sk
sk_wmem_alloc and sk_wmem_queued, use skb->truesize + sizeof(sctp_chunk)
for them.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/outqueue.c')
| -rw-r--r-- | net/sctp/outqueue.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 42191ed9902b..9cb854b05342 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -385,9 +385,7 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc, asoc->outqueue.outstanding_bytes -= sctp_data_size(chk); } - msg_len -= SCTP_DATA_SNDSIZE(chk) + - sizeof(struct sk_buff) + - sizeof(struct sctp_chunk); + msg_len -= chk->skb->truesize + sizeof(struct sctp_chunk); if (msg_len <= 0) break; } @@ -421,9 +419,7 @@ static int sctp_prsctp_prune_unsent(struct sctp_association *asoc, streamout->ext->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++; } - msg_len -= SCTP_DATA_SNDSIZE(chk) + - sizeof(struct sk_buff) + - sizeof(struct sctp_chunk); + msg_len -= chk->skb->truesize + sizeof(struct sctp_chunk); sctp_chunk_free(chk); if (msg_len <= 0) break; |