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lagg: update capabilites on SIOCSIFMTU

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Some NICs might have limited capabilities when Jumbo frames are used.
For exampe some neta interfaces only support TX csum offload when the
packet size is lower than a value specified in DT.
Fix it by re-reading capabilities of children interfaces after MTU
has been successfully changed.

Found by: Jerome Tomczyk <jerome.tomczyk@stormshield.eu>
Reviewed by: jhb
Obtained from: Semihalf
Sponsored by: Stormshield
Differential revision: https://reviews.freebsd.org/D32724
This commit is contained in:
Wojciech Macek 2021-11-06 10:41:43 +01:00
parent 6f397bc0fb
commit acdfc09639
1 changed files with 2 additions and 0 deletions
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2
sys/net/if_lagg.c
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@ -1726,7 +1726,9 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
(*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
}
}
lagg_capabilities(sc);
LAGG_XUNLOCK(sc);
VLAN_CAPABILITIES(ifp);
break;
default: