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net/mlx5e: Add IPv6 traffic class (DSCP) header rewrite support

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Add support for rewriting of IPV6 DSCP part of traffic class field.
Next commands, for example, can be used to offload rewrite action:

OVS:
 $ ovs-ofctl add-flow ovs-sriov "tcpv6, in_port=REP, \
       actions=mod_nw_tos:68, output:NIC"

iproute2:
 $ tc filter add dev REP ingress protocol ipv6 prio 1 flower skip_sw \
       ip_proto tcp \
       action pedit ex munge ip6 traffic_class set 68 retain 0xfc pipe \
       action mirred egress redirect dev NIC

Signed-off-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Maor Dickman 2020-09-03 11:02:10 +03:00 committed by Saeed Mahameed
parent f02882102b
commit 748cde9a38
1 changed files with 1 additions and 0 deletions
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1
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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@ -2615,6 +2615,7 @@ static struct mlx5_fields fields[] = {
OFFLOAD(DIPV6_31_0, 32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
OFFLOAD(IPV6_HOPLIMIT, 8, U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
OFFLOAD(IP_DSCP, 16, 0xc00f, ip6, 0, ip_dscp),
OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source, 0, tcp_sport),
OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest, 0, tcp_dport),