Commit ab9341b5 authored Oct 07, 2019 by Dmytro Linkin Committed by Saeed Mahameed Nov 01, 2019

net/mlx5e: Add ToS (DSCP) header rewrite support



Add support for rewriting of DSCP part of ToS field.
Next commands, for example, can be used to offload rewrite action:

OVS:
 $ ovs-ofctl add-flow ovs-sriov "ip, in_port=REP, \
       actions=mod_nw_tos:68, output:NIC"

iproute2 (used retain mask, as tc command rewrite whole ToS field):
 $ tc filter add dev REP ingress protocol ip prio 1 flower skip_sw \
       ip_proto icmp action pedit munge ip tos set 68 retain 0xfc pipe \
       action mirred egress redirect dev NIC

Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

parent 88f30bbc

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2290,6 +2290,7 @@ static struct mlx5_fields fields[] = {
		OFFLOAD(ETHERTYPE, 16, U16_MAX, eth.h_proto, 0, ethertype),
		OFFLOAD(FIRST_VID, 16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),

		OFFLOAD(IP_DSCP, 8, 0xfc, ip4.tos, 0, ip_dscp),
		OFFLOAD(IP_TTL, 8, U8_MAX, ip4.ttl, 0, ttl_hoplimit),
		OFFLOAD(SIPV4, 32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
		OFFLOAD(DIPV4, 32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),

Admin message