Re: 3.14 regression: huge latency in read/select on tun

[Eric Dumazet]

On Thu, 2014-04-03 at 06:19 -0700, Eric Dumazet wrote:

> It seems TSO support is broken.

If bug is in tun.c you have this list of changes  you could bisect
from :

# git log --oneline v3.13..v3.14 drivers/net/tun.c
6671b2240c54 tun: remove bogus hardware vlan acceleration flags from vlan_features
99932d4fc03a netdevice: add queue selection fallback handler for ndo_select_queue
93e14b6d776e tun: add device name(iff) field to proc fdinfo entry
fa35864e0bb7 tuntap: Fix for a race in accessing numqueues
0a379e21c503 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
fbe4d4565bad tun, rfs: fix the incorrect hash value
9bc8893937c8 tun: Add support for RFS on tun flows
143c90549494 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
3958afa1b272 net: Change skb_get_rxhash to skb_get_hash
42404c091510 Revert "tun: remove useless codes in tun_chr_aio_read() and tun_recvmsg()"
73713357ab58 tun: remove useless codes in tun_chr_aio_read() and tun_recvmsg()
34f9f437104b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
f96eb74c84eb tun: remove unused parameter in tun_do_read()
92d4ea6e412a tun: spelling fixes


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/