mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 00:04:15 +08:00
f4ae8420f6
mpls_xmit() needs to prepend the MPLS-labels to the packet. That implies one needs to make sure there is enough space for it in the headers. Calling skb_cow() implies however that one wants to change even the playload part of the packet (which is not true for MPLS). Thus, call skb_cow_head() instead, which is what other tunnelling protocols do. Running a server with this comm it entirely removed the calls to pskb_expand_head() from the callstack in mpls_xmit() thus having significant CPU-reduction, especially at peak times. Cc: Roopa Prabhu <roopa@nvidia.com> Reported-by: Craig Taylor <cmtaylor@apple.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240815161201.22021-1-cpaasch@apple.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|---|---|---|
| .. | ||
| af_mpls.c | ||
| internal.h | ||
| Kconfig | ||
| Makefile | ||
| mpls_gso.c | ||
| mpls_iptunnel.c | ||