diff options
| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-04-29 17:10:43 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-29 12:26:32 -0700 |
| commit | d854fcbfaeda9748c85de296fbe07b7763a1939c (patch) | |
| tree | c056b8e27021556cc3b69dae521c3b1ef5ccfc63 /net/smc/smc_llc.c | |
| parent | e07d31dc16b0d77ff6b3f71cafe3a825fb80bed4 (diff) | |
net/smc: add new link state and related helpers
Before a link can be reused it must have been cleared. Lowest current
link state is INACTIVE, which does not mean that the link is already
cleared.
Add a new state UNUSED that is set when the link is cleared and can be
reused.
Add helper smc_llc_usable_link() to find an active link in a link group,
and smc_link_usable() to determine if a link is usable.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_llc.c')
| -rw-r--r-- | net/smc/smc_llc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index 903ae068da3a..c267f5006faa 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -372,7 +372,7 @@ static void smc_llc_send_message_work(struct work_struct *work) struct smc_wr_buf *wr_buf; int rc; - if (llcwrk->link->state == SMC_LNK_INACTIVE) + if (!smc_link_usable(llcwrk->link)) goto out; rc = smc_llc_add_pending_send(llcwrk->link, &wr_buf, &pend); if (rc) @@ -562,7 +562,7 @@ static void smc_llc_rx_handler(struct ib_wc *wc, void *buf) return; /* short message */ if (llc->raw.hdr.length != sizeof(*llc)) return; /* invalid message */ - if (link->state == SMC_LNK_INACTIVE) + if (!smc_link_usable(link)) return; /* link not active, drop msg */ switch (llc->raw.hdr.common.type) { |