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net/smc: take link down instead of terminating the link group

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Use the introduced link down processing in all places where the link
group is terminated and take down the affected link only.

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 2020-05-01 12:48:09 +02:00 committed by David S. Miller
parent 541afa10c1
commit 87523930a1
4 changed files with 13 additions and 19 deletions
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7
net/smc/smc_core.c
View File

@ -884,11 +884,8 @@ void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
} else {
list_for_each_entry_safe(lgr, lg, &smc_lgr_list.list, list) {
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (lgr->lnk[i].smcibdev == smcibdev) {
list_move(&lgr->list, &lgr_free_list);
lgr->freeing = 1;
break;
}
if (lgr->lnk[i].smcibdev == smcibdev)
smcr_link_down_cond_sched(&lgr->lnk[i]);
}
}
}

4
net/smc/smc_llc.c
View File

@ -556,7 +556,7 @@ static void smc_llc_rx_delete_link(struct smc_link *link,
smc_llc_send_delete_link(link, 0, SMC_LLC_RESP, true,
SMC_LLC_DEL_PROG_INIT_TERM);
}
smc_lgr_terminate_sched(lgr);
smcr_link_down_cond(link);
}
/* process a confirm_rkey request from peer, remote flow */
@ -831,7 +831,7 @@ static void smc_llc_testlink_work(struct work_struct *work)
if (link->state != SMC_LNK_ACTIVE)
return; /* link state changed */
if (rc <= 0) {
smc_lgr_terminate_sched(smc_get_lgr(link));
smcr_link_down_cond_sched(link);
return;
}
next_interval = link->llc_testlink_time;

2
net/smc/smc_tx.c
View File

@ -283,7 +283,7 @@ static int smc_tx_rdma_write(struct smc_connection *conn, int peer_rmbe_offset,
rdma_wr->rkey = lgr->rtokens[conn->rtoken_idx][link->link_idx].rkey;
rc = ib_post_send(link->roce_qp, &rdma_wr->wr, NULL);
if (rc)
smc_lgr_terminate_sched(lgr);
smcr_link_down_cond_sched(link);
return rc;
}

19
net/smc/smc_wr.c
View File

@ -120,8 +120,8 @@ static inline void smc_wr_tx_process_cqe(struct ib_wc *wc)
sizeof(link->wr_tx_bufs[i]));
clear_bit(i, link->wr_tx_mask);
}
/* terminate connections of this link group abnormally */
smc_lgr_terminate_sched(smc_get_lgr(link));
/* terminate link */
smcr_link_down_cond_sched(link);
}
if (pnd_snd.handler)
pnd_snd.handler(&pnd_snd.priv, link, wc->status);
@ -212,8 +212,8 @@ int smc_wr_tx_get_free_slot(struct smc_link *link,
(smc_wr_tx_get_free_slot_index(link, &idx) != -EBUSY),
SMC_WR_TX_WAIT_FREE_SLOT_TIME);
if (!rc) {
/* timeout - terminate connections */
smc_lgr_terminate_sched(lgr);
/* timeout - terminate link */
smcr_link_down_cond_sched(link);
return -EPIPE;
}
if (idx == link->wr_tx_cnt)
@ -270,7 +270,7 @@ int smc_wr_tx_send(struct smc_link *link, struct smc_wr_tx_pend_priv *priv)
rc = ib_post_send(link->roce_qp, &link->wr_tx_ibs[pend->idx], NULL);
if (rc) {
smc_wr_tx_put_slot(link, priv);
smc_lgr_terminate_sched(smc_get_lgr(link));
smcr_link_down_cond_sched(link);
}
return rc;
}
@ -294,8 +294,8 @@ int smc_wr_reg_send(struct smc_link *link, struct ib_mr *mr)
(link->wr_reg_state != POSTED),
SMC_WR_REG_MR_WAIT_TIME);
if (!rc) {
/* timeout - terminate connections */
smc_lgr_terminate_sched(smc_get_lgr(link));
/* timeout - terminate link */
smcr_link_down_cond_sched(link);
return -EPIPE;
}
if (rc == -ERESTARTSYS)
@ -393,10 +393,7 @@ static inline void smc_wr_rx_process_cqes(struct ib_wc wc[], int num)
case IB_WC_RETRY_EXC_ERR:
case IB_WC_RNR_RETRY_EXC_ERR:
case IB_WC_WR_FLUSH_ERR:
/* terminate connections of this link group
* abnormally
*/
smc_lgr_terminate_sched(smc_get_lgr(link));
smcr_link_down_cond_sched(link);
break;
default:
smc_wr_rx_post(link); /* refill WR RX */