mlxsw: spectrum_router: Add support for custom multipath hash policy
When this policy is set, only enable the packet fields that were enabled by user space for multipath hash computation. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -9647,12 +9647,53 @@ static void mlxsw_sp_mp4_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config)
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4);
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}
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static void
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mlxsw_sp_mp_hash_inner_custom(struct mlxsw_sp_mp_hash_config *config,
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u32 hash_fields)
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{
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unsigned long *inner_headers = config->inner_headers;
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unsigned long *inner_fields = config->inner_fields;
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/* IPv4 Inner */
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_NOT_TCP_NOT_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_TCP_UDP);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP)
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_SIP0, 4);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP)
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_DIP0, 4);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO)
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV4_PROTOCOL);
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/* IPv6 inner */
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_NOT_TCP_NOT_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_TCP_UDP);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP) {
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_SIP0_7);
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_SIP8, 8);
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}
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP) {
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_DIP0_7);
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_DIP8, 8);
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}
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO)
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_NEXT_HEADER);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_FLOWLABEL)
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_FLOW_LABEL);
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/* L4 inner */
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV4);
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MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV6);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_SPORT);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_DPORT);
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}
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static void mlxsw_sp_mp4_hash_init(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_mp_hash_config *config)
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{
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struct net *net = mlxsw_sp_net(mlxsw_sp);
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unsigned long *headers = config->headers;
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unsigned long *fields = config->fields;
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u32 hash_fields;
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switch (net->ipv4.sysctl_fib_multipath_hash_policy) {
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case 0:
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@ -9671,6 +9712,25 @@ static void mlxsw_sp_mp4_hash_init(struct mlxsw_sp *mlxsw_sp,
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/* Inner */
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mlxsw_sp_mp_hash_inner_l3(config);
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break;
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case 3:
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hash_fields = net->ipv4.sysctl_fib_multipath_hash_fields;
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/* Outer */
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MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_NOT_TCP_NOT_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_TCP_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV4);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP)
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_SIP0, 4);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP)
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV4_PROTOCOL);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
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/* Inner */
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mlxsw_sp_mp_hash_inner_custom(config, hash_fields);
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break;
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}
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}
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@ -9690,6 +9750,7 @@ static void mlxsw_sp_mp6_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config)
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static void mlxsw_sp_mp6_hash_init(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_mp_hash_config *config)
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{
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u32 hash_fields = ip6_multipath_hash_fields(mlxsw_sp_net(mlxsw_sp));
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unsigned long *headers = config->headers;
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unsigned long *fields = config->fields;
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@ -9714,6 +9775,30 @@ static void mlxsw_sp_mp6_hash_init(struct mlxsw_sp *mlxsw_sp,
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/* Inner */
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mlxsw_sp_mp_hash_inner_l3(config);
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break;
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case 3:
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/* Outer */
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MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_NOT_TCP_NOT_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_TCP_UDP);
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MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV6);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP) {
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MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_SIP0_7);
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_SIP8, 8);
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}
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP) {
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MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_DIP0_7);
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MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_DIP8, 8);
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}
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_FLOWLABEL)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
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if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT)
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MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
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/* Inner */
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mlxsw_sp_mp_hash_inner_custom(config, hash_fields);
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break;
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}
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}
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