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0b01878fd0
freebsd/sys/net
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Zhenlei Huang b22aae410b net: Remove vlan metadata on pcp / vlan encapsulation 
For oubound traffic, the flag M_VLANTAG is set in mbuf packet header to
indicate the underlaying interface do hardware VLAN tag insertion if
capable, otherwise the net stack will do 802.1Q encapsulation instead.

Commit 868aabb470 introduced per-flow priority which set the priority ID
in the mbuf packet header. There's a corner case that when the driver is
disabled to do hardware VLAN tag insertion, and the net stack do 802.1Q
encapsulation, then it will result double tagged packets if the driver do
not check the enabled capability (hardware VLAN tag insertion).

Unfortunately some drivers, currently known cxgbe(4) re(4) ure(4) igc(4)
and vmx(4), have this issue. From a quick review for other interface
drivers I believe a lot more drivers have the same issue. It makes more
sense to fix in net stack than to try to change every single driver.

PR:	270736
Reviewed by:	kp
Fixes:	868aabb470 Add IP(V6)_VLAN_PCP to set 802.1 priority per-flow
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D39499
2023-08-30 17:36:38 +08:00
..
altq sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
route sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_buffer.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_buffer.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpf_filter.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_jitter.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_jitter.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpf_zerocopy.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf_zerocopy.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpf.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bpf.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bpfdesc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
bridgestp.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
bridgestp.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
debugnet_inet.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
debugnet_int.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
debugnet.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
debugnet.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
dlt.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ethernet.h net: Do not overwrite if_vlan's PCP 2023-08-23 17:53:48 +08:00
firewire.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ieee8023ad_lacp.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ieee8023ad_lacp.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ieee_oui.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_arp.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_bridge.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_bridgevar.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_clone.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_clone.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_dead.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_disc.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_dl.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_edsc.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_enc.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_enc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_epair.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_ethersubr.c net: Remove vlan metadata on pcp / vlan encapsulation 2023-08-30 17:36:38 +08:00
if_fwsubr.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_gif.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_gif.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
if_gre.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_gre.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_infiniband.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_ipsec.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_ipsec.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_lagg.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_lagg.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_llatbl.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_llatbl.h sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_llc.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_loop.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_me.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_media.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_media.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
if_mib.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_mib.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_ovpn.c if_ovpn: clear mbuf flags on rx 2023-08-22 20:30:11 +02:00
if_ovpn.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
if_pflog.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_pfsync.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_private.h IfAPI: Hide the macros that touch ifnet members 2023-04-24 09:54:23 -04:00
if_stf.c sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
if_stf.h
if_strings.h ifnet: fix if_strings.h build check 2023-06-16 15:54:29 +00:00
if_tap.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_tun.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_tuntap.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_types.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
if_var.h IfAPI: Retire if_etherbpfmtap() and if_bpfmtap() 2023-08-25 12:50:14 -04:00
if_vlan_var.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if_vlan.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_vxlan.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
if_vxlan.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
if.c IfAPI: Retire if_etherbpfmtap() and if_bpfmtap() 2023-08-25 12:50:14 -04:00
if.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
ifdi_if.m iflib: invert default restart on VLAN changes 2023-08-24 13:48:19 -07:00
iflib.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
iflib.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ifq.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ifq.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
infiniband.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mp_ring.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
mp_ring.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppcc.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
mppcd.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netisr_internal.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netisr.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
netisr.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netmap_legacy.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
netmap_user.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
netmap_virt.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
netmap.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
paravirt.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
pfil.c sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
pfil.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
pfkeyv2.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
pfvar.h pf: Remove DIOCCLRSTATES and DIOCKILLSTATES 2023-08-29 11:01:51 +02:00
ppp_defs.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
radix.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
radix.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
rndis.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
route.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
route.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
rss_config.c sys: Remove $FreeBSD$: two-line .c pattern 2023-08-16 11:54:30 -06:00
rss_config.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
rtsock.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
sff8436.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
sff8472.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
slcompress.c sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
slcompress.h sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
toeplitz.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
toeplitz.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
vnet.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
vnet.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00