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mlxsw: spectrum_router: Replace if statement with a switch statement 

The code was written when only two multipath hash policies were present,
so the if statement was sufficient. The next patch and future patches
are going to add support for more policies, so move to a switch
statement.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2021-05-19 15:08:19 +03:00 committed by David S. Miller
parent eb0e4d59b6
commit 7725c1c8f7
1 changed files with 37 additions and 30 deletions
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67
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@ -9612,41 +9612,48 @@ static void mlxsw_sp_mp_hash_field_set(char *recr2_pl, int field)
static void mlxsw_sp_mp4_hash_init(struct mlxsw_sp *mlxsw_sp, char *recr2_pl)
{
struct net *net = mlxsw_sp_net(mlxsw_sp);
bool only_l3 = !net->ipv4.sysctl_fib_multipath_hash_policy;
mlxsw_sp_mp_hash_header_set(recr2_pl,
MLXSW_REG_RECR2_IPV4_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_TCP_UDP);
mlxsw_reg_recr2_ipv4_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv4_dip_enable(recr2_pl);
if (only_l3)
return;
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_EN_IPV4);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV4_PROTOCOL);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_SPORT);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_DPORT);
switch (net->ipv4.sysctl_fib_multipath_hash_policy) {
case 0:
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_TCP_UDP);
mlxsw_reg_recr2_ipv4_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv4_dip_enable(recr2_pl);
break;
case 1:
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_TCP_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_EN_IPV4);
mlxsw_reg_recr2_ipv4_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv4_dip_enable(recr2_pl);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV4_PROTOCOL);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_SPORT);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_DPORT);
break;
}
}
static void mlxsw_sp_mp6_hash_init(struct mlxsw_sp *mlxsw_sp, char *recr2_pl)
{
bool only_l3 = !ip6_multipath_hash_policy(mlxsw_sp_net(mlxsw_sp));
mlxsw_sp_mp_hash_header_set(recr2_pl,
MLXSW_REG_RECR2_IPV6_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_TCP_UDP);
mlxsw_reg_recr2_ipv6_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv6_dip_enable(recr2_pl);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_NEXT_HEADER);
if (only_l3) {
mlxsw_sp_mp_hash_field_set(recr2_pl,
MLXSW_REG_RECR2_IPV6_FLOW_LABEL);
} else {
mlxsw_sp_mp_hash_header_set(recr2_pl,
MLXSW_REG_RECR2_TCP_UDP_EN_IPV6);
mlxsw_sp_mp_hash_field_set(recr2_pl,
MLXSW_REG_RECR2_TCP_UDP_SPORT);
mlxsw_sp_mp_hash_field_set(recr2_pl,
MLXSW_REG_RECR2_TCP_UDP_DPORT);
switch (ip6_multipath_hash_policy(mlxsw_sp_net(mlxsw_sp))) {
case 0:
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_TCP_UDP);
mlxsw_reg_recr2_ipv6_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv6_dip_enable(recr2_pl);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_NEXT_HEADER);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_FLOW_LABEL);
break;
case 1:
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_NOT_TCP_NOT_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_TCP_UDP);
mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_EN_IPV6);
mlxsw_reg_recr2_ipv6_sip_enable(recr2_pl);
mlxsw_reg_recr2_ipv6_dip_enable(recr2_pl);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_NEXT_HEADER);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_SPORT);
mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_DPORT);
break;
}
}