diff options
| author | James Morris <james.l.morris@oracle.com> | 2012-09-28 13:37:32 +1000 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2012-09-28 13:37:32 +1000 |
| commit | bf5308344527d015ac9a6d2bda4ad4d40fd7d943 (patch) | |
| tree | 566e61e2cfc648c374d15cfc8c661b73e1a471f8 /net/ipv4/tcp.c | |
| parent | 3585e96cd1049682b8a19a0b699422156e9d735b (diff) | |
| parent | 979570e02981d4a8fc20b3cc8fd651856c98ee9d (diff) | |
| download | olio-linux-3.10-bf5308344527d015ac9a6d2bda4ad4d40fd7d943.tar.xz olio-linux-3.10-bf5308344527d015ac9a6d2bda4ad4d40fd7d943.zip | |
Merge tag 'v3.6-rc7' into next
Linux 3.6-rc7
Requested by David Howells so he can merge his key susbsystem work into
my tree with requisite -linus changesets.
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 2109ff4a1da..5f641934182 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1762,8 +1762,14 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, } #ifdef CONFIG_NET_DMA - if (tp->ucopy.dma_chan) - dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); + if (tp->ucopy.dma_chan) { + if (tp->rcv_wnd == 0 && + !skb_queue_empty(&sk->sk_async_wait_queue)) { + tcp_service_net_dma(sk, true); + tcp_cleanup_rbuf(sk, copied); + } else + dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); + } #endif if (copied >= target) { /* Do not sleep, just process backlog. */ @@ -2325,10 +2331,17 @@ static int tcp_repair_options_est(struct tcp_sock *tp, tp->rx_opt.mss_clamp = opt.opt_val; break; case TCPOPT_WINDOW: - if (opt.opt_val > 14) - return -EFBIG; + { + u16 snd_wscale = opt.opt_val & 0xFFFF; + u16 rcv_wscale = opt.opt_val >> 16; + + if (snd_wscale > 14 || rcv_wscale > 14) + return -EFBIG; - tp->rx_opt.snd_wscale = opt.opt_val; + tp->rx_opt.snd_wscale = snd_wscale; + tp->rx_opt.rcv_wscale = rcv_wscale; + tp->rx_opt.wscale_ok = 1; + } break; case TCPOPT_SACK_PERM: if (opt.opt_val != 0) |