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| author | Guangguan Wang <guangguan.wang@linux.alibaba.com> | 2022-05-12 11:08:20 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-12 10:01:36 -0700 |
| commit | f3c46e41b32b6266cf60b0985c61748f53bf1c61 (patch) | |
| tree | f272f3a7a5b3eddd3a352720ddd717ebba46c143 /net/smc | |
| parent | b7be130c5d52e5224ac7d89568737b37b4c4b785 (diff) | |
| download | linux-f3c46e41b32b6266cf60b0985c61748f53bf1c61.tar.bz2 | |
net/smc: non blocking recvmsg() return -EAGAIN when no data and signal_pending
Non blocking sendmsg will return -EAGAIN when any signal pending
and no send space left, while non blocking recvmsg return -EINTR
when signal pending and no data received. This may makes confused.
As TCP returns -EAGAIN in the conditions described above. Align the
behavior of smc with TCP.
Fixes: 846e344eb722 ("net/smc: add receive timeout check")
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20220512030820.73848-1-guangguan.wang@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_rx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/smc/smc_rx.c b/net/smc/smc_rx.c index 51e8eb2933ff..338b9ef806e8 100644 --- a/net/smc/smc_rx.c +++ b/net/smc/smc_rx.c @@ -355,12 +355,12 @@ int smc_rx_recvmsg(struct smc_sock *smc, struct msghdr *msg, } break; } + if (!timeo) + return -EAGAIN; if (signal_pending(current)) { read_done = sock_intr_errno(timeo); break; } - if (!timeo) - return -EAGAIN; } if (!smc_rx_data_available(conn)) { |