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net/smc: adapt SMC remote DELETE_RKEY processing to use the LLC flow 

Use the LLC flow framework for the processing of DELETE_RKEY messages
that were received from the peer.

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>
This commit is contained in:
Karsten Graul 2020-04-30 15:55:49 +02:00 committed by David S. Miller
parent 3bc67e098c
commit 218b24fe38
1 changed files with 24 additions and 13 deletions
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37
net/smc/smc_llc.c
View File

@ -601,31 +601,37 @@ out:
smc_llc_flow_qentry_del(&lgr->llc_flow_rmt);
}
static void smc_llc_rx_confirm_rkey_cont(struct smc_link *link,
struct smc_llc_msg_confirm_rkey_cont *llc)
{
/* ignore rtokens for other links, we have only one link */
llc->hd.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, llc);
}
static void smc_llc_rx_delete_rkey(struct smc_link *link,
struct smc_llc_msg_delete_rkey *llc)
/* process a delete_rkey request from peer, remote flow */
static void smc_llc_rmt_delete_rkey(struct smc_link_group *lgr)
{
struct smc_llc_msg_delete_rkey *llc;
struct smc_llc_qentry *qentry;
struct smc_link *link;
u8 err_mask = 0;
int i, max;
qentry = lgr->llc_flow_rmt.qentry;
llc = &qentry->msg.delete_rkey;
link = qentry->link;
max = min_t(u8, llc->num_rkeys, SMC_LLC_DEL_RKEY_MAX);
for (i = 0; i < max; i++) {
if (smc_rtoken_delete(link, llc->rkey[i]))
err_mask |= 1 << (SMC_LLC_DEL_RKEY_MAX - 1 - i);
}
if (err_mask) {
llc->hd.flags |= SMC_LLC_FLAG_RKEY_NEG;
llc->err_mask = err_mask;
}
llc->hd.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, &qentry->msg);
smc_llc_flow_qentry_del(&lgr->llc_flow_rmt);
}
static void smc_llc_rx_confirm_rkey_cont(struct smc_link *link,
struct smc_llc_msg_confirm_rkey_cont *llc)
{
/* ignore rtokens for other links, we have only one link */
llc->hd.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, llc);
}
@ -698,8 +704,13 @@ static void smc_llc_event_handler(struct smc_llc_qentry *qentry)
smc_llc_rx_confirm_rkey_cont(link, &llc->confirm_rkey_cont);
break;
case SMC_LLC_DELETE_RKEY:
smc_llc_rx_delete_rkey(link, &llc->delete_rkey);
break;
/* new request from remote, assign to remote flow */
if (smc_llc_flow_start(&lgr->llc_flow_rmt, qentry)) {
/* process here, does not wait for more llc msgs */
smc_llc_rmt_delete_rkey(lgr);
smc_llc_flow_stop(lgr, &lgr->llc_flow_rmt);
}
return;
}
out:
kfree(qentry);