From c6f02ebeea3a0ff4bddddf0fd82303190ebb3dd1 Mon Sep 17 00:00:00 2001 From: Karsten Graul Date: Mon, 4 May 2020 14:18:38 +0200 Subject: net/smc: switch connections to alternate link Add smc_switch_conns() to switch all connections from a link that is going down. Find an other link to switch the connections to, and switch each connection to the new link. smc_switch_cursor() updates the cursors of a connection to the state of the last successfully sent CDC message. When there is no link to switch to, terminate the link group. Call smc_switch_conns() when a link is going down. And with the possibility that links of connections can switch adapt CDC and TX functions to detect and handle link switches. Signed-off-by: Karsten Graul Reviewed-by: Ursula Braun Signed-off-by: David S. Miller --- net/smc/smc_llc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/smc/smc_llc.c') diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index 7675ccd6f3c3..8d2368accbad 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -933,7 +933,7 @@ static void smc_llc_delete_asym_link(struct smc_link_group *lgr) return; /* no asymmetric link */ if (!smc_link_downing(&lnk_asym->state)) return; - /* tbd: lnk_new = smc_switch_conns(lgr, lnk_asym, false); */ + lnk_new = smc_switch_conns(lgr, lnk_asym, false); smc_wr_tx_wait_no_pending_sends(lnk_asym); if (!lnk_new) goto out_free; @@ -1195,7 +1195,7 @@ static void smc_llc_process_cli_delete_link(struct smc_link_group *lgr) smc_llc_send_message(lnk, &qentry->msg); /* response */ if (smc_link_downing(&lnk_del->state)) { - /* tbd: call smc_switch_conns(lgr, lnk_del, false); */ + smc_switch_conns(lgr, lnk_del, false); smc_wr_tx_wait_no_pending_sends(lnk_del); } smcr_link_clear(lnk_del); @@ -1245,7 +1245,7 @@ static void smc_llc_process_srv_delete_link(struct smc_link_group *lgr) goto out; /* asymmetric link already deleted */ if (smc_link_downing(&lnk_del->state)) { - /* tbd: call smc_switch_conns(lgr, lnk_del, false); */ + smc_switch_conns(lgr, lnk_del, false); smc_wr_tx_wait_no_pending_sends(lnk_del); } if (!list_empty(&lgr->list)) { -- cgit v1.2.3