net/smc: fix fallback failed while sendmsg with fastopen

Before determining whether the msg has unsupported options, it has been
prematurely terminated by the wrong status check.

For the application, the general usages of MSG_FASTOPEN likes

fd = socket(...)
/* rather than connect */
sendto(fd, data, len, MSG_FASTOPEN)

Hence, We need to check the flag before state check, because the sock
state here is always SMC_INIT when applications tries MSG_FASTOPEN.
Once we found unsupported options, fallback it to TCP.

Fixes: ee9dfbef02d1 ("net/smc: handle sockopts forcing fallback")
Signed-off-by: D. Wythe <[email protected]>
Signed-off-by: Simon Horman <[email protected]>

v2 -> v1: Optimize code style
Reviewed-by: Tony Lu <[email protected]>

Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions