[lkml]   [2022]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC net-next v6 2/2] bnxt: Use generic HBH removal helper in tx path
On Fri, Dec 9, 2022 at 8:16 PM Coco Li <> wrote:
> Eric Dumazet implemented Big TCP that allowed bigger TSO/GRO packet sizes
> for IPv6 traffic. See patch series:
> 'commit 89527be8d8d6 ("net: add IFLA_TSO_{MAX_SIZE|SEGS} attributes")'
> This reduces the number of packets traversing the networking stack and
> should usually improves performance. However, it also inserts a
> temporary Hop-by-hop IPv6 extension header.
> Using the HBH header removal method in the previous patch, the extra header
> be removed in bnxt drivers to allow it to send big TCP packets (bigger
> TSO packets) as well.
> Tested:
> Compiled locally
> To further test functional correctness, update the GSO/GRO limit on the
> physical NIC:
> ip link set eth0 gso_max_size 181000
> ip link set eth0 gro_max_size 181000
> Note that if there are bonding or ipvan devices on top of the physical
> NIC, their GSO sizes need to be updated as well.
> Then, IPv6/TCP packets with sizes larger than 64k can be observed.
> Signed-off-by: Coco Li <>

Reviewed-by: Michael Chan <>
Tested-by: Michael Chan <>

[unhandled content-type:application/pkcs7-signature]
 \ /
  Last update: 2022-12-11 06:09    [W:0.118 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site