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From: Jan Beulich <jbeulich@suse.com>
To: Wei Liu <wl@xen.org>, Paul Durrant <paul@xen.org>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: [PATCH] xen-netback: correct success/error reporting for the SKB-with-fraglist case
Date: Tue, 23 Feb 2021 17:29:25 +0100	[thread overview]
Message-ID: <4dd5b8ec-a255-7ab1-6dbf-52705acd6d62@suse.com> (raw)

When re-entering the main loop of xenvif_tx_check_gop() a 2nd time, the
special considerations for the head of the SKB no longer apply. Don't
mistakenly report ERROR to the frontend for the first entry in the list,
even if - from all I can tell - this shouldn't matter much as the overall
transmit will need to be considered failed anyway.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -499,7 +499,7 @@ check_frags:
 				 * the header's copy failed, and they are
 				 * sharing a slot, send an error
 				 */
-				if (i == 0 && sharedslot)
+				if (i == 0 && !first_shinfo && sharedslot)
 					xenvif_idx_release(queue, pending_idx,
 							   XEN_NETIF_RSP_ERROR);
 				else

             reply	other threads:[~2021-02-23 16:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-23 16:29 Jan Beulich [this message]
2021-02-24 16:39 ` Paul Durrant
2021-02-25  7:33   ` Jan Beulich
2021-02-25 12:11     ` Paul Durrant
2021-02-25 14:00       ` Jan Beulich
2021-02-25 16:23         ` Paul Durrant
2021-05-20 11:46           ` Jan Beulich
2021-07-15  8:58             ` Ping: " Jan Beulich
2021-09-16 15:45               ` Ping²: " Jan Beulich
2021-09-16 18:34                 ` Paul Durrant
2021-09-16 21:48                   ` Sander Eikelenboom
2021-09-17  6:21                     ` Jan Beulich

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