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| author | Luiz Otavio O Souza <loos@FreeBSD.org> | 2014-07-03 20:16:48 +0000 |
|---|---|---|
| committer | Luiz Otavio O Souza <loos@FreeBSD.org> | 2014-07-03 20:16:48 +0000 |
| commit | 4bd2c6a20d91b03499ce99e3b00248653811e8da (patch) | |
| tree | 1b23a2f8a06730f6298d08ba4bfbda91b4ed2595 /sys/mips/atheros | |
| parent | bfae93299c73fdd7305249b825b96c268684b41e (diff) | |
| download | src-4bd2c6a20d91b03499ce99e3b00248653811e8da.tar.gz src-4bd2c6a20d91b03499ce99e3b00248653811e8da.zip | |
Properly advertise that if_arge can handle long frames (if_arge is set to
handle packets up to 1536 bytes)
This fixes the need to frag that could happen when using vlans on top of
if_arge (which is a common case for the use the switch ports as individual
NICs).
Previously to this commit any vlan setup with if_arge as parent would have
the MTU of the parent interface reduced by the size of dot1q header
(4 bytes).
Tested on TP-Link 1043ND (where the WAN port is just a switch port setup to
tag packets in a different VLAN than the LAN ports).
Reported and tested by: Harm Weites (harm at weites.com)
Notes
Notes:
svn path=/head/; revision=268235
Diffstat (limited to 'sys/mips/atheros')
| -rw-r--r-- | sys/mips/atheros/if_arge.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/mips/atheros/if_arge.c b/sys/mips/atheros/if_arge.c index f4ead993004b..85617387f5d7 100644 --- a/sys/mips/atheros/if_arge.c +++ b/sys/mips/atheros/if_arge.c @@ -703,6 +703,9 @@ arge_attach(device_t dev) ifp->if_snd.ifq_maxlen = ifqmaxlen; IFQ_SET_READY(&ifp->if_snd); + /* Tell the upper layer(s) we support long frames. */ + ifp->if_capabilities |= IFCAP_VLAN_MTU; + ifp->if_capenable = ifp->if_capabilities; #ifdef DEVICE_POLLING ifp->if_capabilities |= IFCAP_POLLING; |