From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Simmons Date: Thu, 27 Feb 2020 16:10:21 -0500 Subject: [lustre-devel] [PATCH 153/622] lnet: socklnd: dynamically set LND parameters In-Reply-To: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> References: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> Message-ID: <1582838290-17243-154-git-send-email-jsimmons@infradead.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org From: Sonia Sharma Currently, the socklnd parameters cannot be set dynamically. Only the default values are set which cannot be changed by deleting and re-adding the net with DLC. This patch allows setting socklnd parameters dynamically. WC-bug-id: https://jira.whamcloud.com/browse/LU-11371 Lustre-commit: 1d94072c63f5 ("LU-11371 socklnd: dynamically set LND parameters") Signed-off-by: Sonia Sharma Reviewed-on: https://review.whamcloud.com/33191 Reviewed-by: James Simmons Reviewed-by: Doug Oucharek Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- net/lnet/klnds/socklnd/socklnd.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/net/lnet/klnds/socklnd/socklnd.c b/net/lnet/klnds/socklnd/socklnd.c index 72ecf80..ba5623a 100644 --- a/net/lnet/klnds/socklnd/socklnd.c +++ b/net/lnet/klnds/socklnd/socklnd.c @@ -2723,6 +2723,7 @@ static int ksocknal_push(struct lnet_ni *ni, struct lnet_process_id id) ksocknal_startup(struct lnet_ni *ni) { struct ksock_net *net; + struct lnet_ioctl_config_lnd_cmn_tunables *net_tunables; struct ksock_interface *ksi = NULL; struct lnet_inetdev *ifaces = NULL; int i = 0; @@ -2745,17 +2746,28 @@ static int ksocknal_push(struct lnet_ni *ni, struct lnet_process_id id) spin_lock_init(&net->ksnn_lock); net->ksnn_incarnation = ktime_get_real_ns(); ni->ni_data = net; - if (!ni->ni_net->net_tunables_set) { - ni->ni_net->net_tunables.lct_peer_timeout = + net_tunables = &ni->ni_net->net_tunables; + + if (net_tunables->lct_peer_timeout == -1) + net_tunables->lct_peer_timeout = *ksocknal_tunables.ksnd_peertimeout; - ni->ni_net->net_tunables.lct_max_tx_credits = + + if (net_tunables->lct_max_tx_credits == -1) + net_tunables->lct_max_tx_credits = *ksocknal_tunables.ksnd_credits; - ni->ni_net->net_tunables.lct_peer_tx_credits = + + if (net_tunables->lct_peer_tx_credits == -1) + net_tunables->lct_peer_tx_credits = *ksocknal_tunables.ksnd_peertxcredits; - ni->ni_net->net_tunables.lct_peer_rtr_credits = + + if (net_tunables->lct_peer_tx_credits > + net_tunables->lct_max_tx_credits) + net_tunables->lct_peer_tx_credits = + net_tunables->lct_max_tx_credits; + + if (net_tunables->lct_peer_rtr_credits == -1) + net_tunables->lct_peer_rtr_credits = *ksocknal_tunables.ksnd_peerrtrcredits; - ni->ni_net->net_tunables_set = true; - } rc = lnet_inet_enumerate(&ifaces); if (rc < 0) -- 1.8.3.1