git: df90074502a0 - stable/12 - e1000: fix multicast setting in VF

[Kevin Bowling]

The branch stable/12 has been updated by kbowling (ports committer):

URL: https://cgit.FreeBSD.org/src/commit/?id=df90074502a0034fd54c84da48ce632d4fade6f1

commit df90074502a0034fd54c84da48ce632d4fade6f1
Author:     Yong Wang <wang.yong19 at zte.com.cn>
AuthorDate: 2017-02-21 09:33:23 +0000
Commit:     Kevin Bowling <kbowling at FreeBSD.org>
CommitDate: 2021-09-24 01:40:08 +0000

    e1000: fix multicast setting in VF
    
    In function e1000_update_mc_addr_list_vf(), "msgbuf[0]" is used prior
    to initialization at "msgbuf[0] |= E1000_VF_SET_MULTICAST_OVERFLOW".
    And "msgbuf[0]" is overwritten at "msgbuf[0] = E1000_VF_SET_MULTICAST".
    
    Fix it by moving the second line prior to the first one that mentioned
    above.
    
    Fixes: dffbaf7880a8 ("e1000: revert fix for multicast in VF")
    Cc: stable at dpdk.org
    
    Signed-off-by: Yong Wang <wang.yong19 at zte.com.cn>
    Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
    
    Approved by:    imp
    Obtained from:  DPDK (f58ca2f9ef6)
    MFC after:      1 week
    
    (cherry picked from commit ecf2a89a997ad4a14339b6a2f544e44b422620a0)
---
 sys/dev/e1000/e1000_vf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/dev/e1000/e1000_vf.c b/sys/dev/e1000/e1000_vf.c
index 2a52d7dbd814..b17df650265b 100644
--- a/sys/dev/e1000/e1000_vf.c
+++ b/sys/dev/e1000/e1000_vf.c
@@ -419,12 +419,13 @@ void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
 
 	DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
 
+	msgbuf[0] = E1000_VF_SET_MULTICAST;
+
 	if (mc_addr_count > 30) {
 		msgbuf[0] |= E1000_VF_SET_MULTICAST_OVERFLOW;
 		mc_addr_count = 30;
 	}
 
-	msgbuf[0] = E1000_VF_SET_MULTICAST;
 	msgbuf[0] |= mc_addr_count << E1000_VT_MSGINFO_SHIFT;
 
 	for (i = 0; i < mc_addr_count; i++) {