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Propagate IFCAP_LRO from trunk to vlan interface.

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False positive here cost nothing, while false negative may lead to some
confusions.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
This commit is contained in:
Alexander Motin 2017-04-29 08:28:59 +00:00
parent 90c4a1e4c0
commit 59150e9141
1 changed files with 10 additions and 0 deletions
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10
sys/net/if_vlan.c
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@ -1590,6 +1590,16 @@ vlan_capabilities(struct ifvlan *ifv)
hwa |= p->if_hwassist & CSUM_TSO;
}
/*
* If the parent interface can do LRO and checksum offloading on
* VLANs, then guess it may do LRO on VLANs. False positive here
* cost nothing, while false negative may lead to some confusions.
*/
if (p->if_capabilities & IFCAP_VLAN_HWCSUM)
cap |= p->if_capabilities & IFCAP_LRO;
if (p->if_capenable & IFCAP_VLAN_HWCSUM)
ena |= p->if_capenable & IFCAP_LRO;
/*
* If the parent interface can offload TCP connections over VLANs then
* propagate its TOE capability to the VLAN interface.