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From: James Simmons <jsimmons@infradead.org>
To: Andreas Dilger <adilger@whamcloud.com>,
	Oleg Drokin <green@whamcloud.com>, NeilBrown <neilb@suse.de>
Cc: Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [lustre-devel] [PATCH 21/27] lnet: simplify lnet_ni_add_interface
Date: Sun, 13 Jun 2021 19:11:31 -0400	[thread overview]
Message-ID: <1623625897-17706-22-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1623625897-17706-1-git-send-email-jsimmons@infradead.org>

From: Olaf Faaland <faaland1@llnl.gov>

Remove an unnecessary counter and move the comment before
the relevant code.  Improve error messages.

WC-bug-id: https://jira.whamcloud.com/browse/LU-14665
Lustre-commit: b77a6d86936c32bb ("LU-14665 lnet: simplify lnet_ni_add_interface")
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-on: https://review.whamcloud.com/43525
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Neil Brown <neilb@suse.de>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 net/lnet/lnet/config.c | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/net/lnet/lnet/config.c b/net/lnet/lnet/config.c
index 5f4b90b..0117611 100644
--- a/net/lnet/lnet/config.c
+++ b/net/lnet/lnet/config.c
@@ -369,31 +369,26 @@ struct lnet_net *
 static int
 lnet_ni_add_interface(struct lnet_ni *ni, char *iface)
 {
-	int niface = 0;
-
 	if (!ni)
 		return -ENOMEM;
 
-	/* Allocate a separate piece of memory and copy
-	 * into it the string, so we don't have
-	 * a depencency on the tokens string.  This way we
-	 * can free the tokens at the end of the function.
-	 * The newly allocated ni_interface[] can be
-	 * freed when freeing the NI */
-	if (ni->ni_interface)
-		niface++;
-
-	if (niface >= 1) {
-		LCONSOLE_ERROR_MSG(0x115, "Too many interfaces "
-				   "for net %s\n",
-				   libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
+	if (ni->ni_interface) {
+		LCONSOLE_ERROR_MSG(0x115, "%s: interface %s already set for net %s: rc = %d\n",
+				   iface, ni->ni_interface,
+				   libcfs_net2str(LNET_NIDNET(ni->ni_nid)),
+				   -EINVAL);
 		return -EINVAL;
 	}
 
+	/* Allocate memory for the interface, so the code parsing input into
+	 * tokens and adding interfaces can free the input safely.
+	 * ni->ni_interface is freed in lnet_ni_free().
+	 */
 	ni->ni_interface = kstrdup(iface, GFP_KERNEL);
 
 	if (!ni->ni_interface) {
-		CERROR("Can't allocate net interface name\n");
+		CERROR("%s: cannot allocate net interface name: rc = %d\n",
+		       iface, -ENOMEM);
 		return -ENOMEM;
 	}
 
-- 
1.8.3.1

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  parent reply	other threads:[~2021-06-13 23:12 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-13 23:11 [lustre-devel] [PATCH 00/27] lustre: sync to 2.14.52 James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 01/27] lustre: uapi: add mdt_hash_name James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 02/27] lustre: uapi: rename CONFIG_T_* to MGS_CFG_T_* James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 03/27] lnet: o2iblnd: fix bug in list_first_entry() change James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 04/27] lustre: flr: mmap write/punch does not stale other mirrors James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 05/27] lustre: llite: default lsm update may memory leak James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 06/27] lustre: pcc: don't alloc FID in LLITE for pcc open James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 07/27] lustre: quota: default OST Pool Quotas James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 08/27] lustre: rename tgt_pool_* functions James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 09/27] lustre: llite: refresh layout after mirror merge/split James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 10/27] lustre: ptlrpc: do not match reply with resent RPC James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 11/27] lustre: vvp: wait for nrpages to be updated James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 12/27] lustre: obd: check if sbi->ll_md_exp is initialized James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 13/27] lustre: osc: Batch gang_lookup cbs James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 14/27] lustre: llite: Return errors for aio James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 15/27] lnet: do not crash if lnet_sock_getaddr returns error James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 16/27] lustre: sec: forbid file rename from enc to unencrypted dir James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 17/27] lustre: mdc: start changelog thread upon first access James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 18/27] lustre: llog: changelog purge deletes plain llog James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 19/27] lnet: libcfs: allow comma-separated masks James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 20/27] lustre: osc: cleanup comment in osc_object_is_contended James Simmons
2021-06-13 23:11 ` James Simmons [this message]
2021-06-13 23:11 ` [lustre-devel] [PATCH 22/27] lustre: lmv: change default hash type to crush James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 23/27] lustre: ptlrpc: move more members in PTLRPC request into pill James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 24/27] lustre: llite: add selinux testing James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 25/27] lnet: Fix destination NID for discovery PUSH James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 26/27] lnet: Check if discovery toggled off in ping reply James Simmons
2021-06-13 23:11 ` [lustre-devel] [PATCH 27/27] lustre: update version to 2.14.52 James Simmons

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