openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

mlxsw: spectrum: Add packet traps for BFD packets 

Bidirectional Forwarding Detection (BFD) provides "low-overhead,
short-duration detection of failures in the path between adjacent
forwarding engines" (RFC 5880).

This is accomplished by exchanging BFD packets between the two
forwarding engines. Up until now these packets were trapped via the
general local delivery (i.e., IP2ME) trap which also traps a lot of
other packets that are not as time-sensitive as BFD packets.

Expose dedicated traps for BFD packets so that user space could
configure a dedicated policer for them.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2020-05-26 02:05:55 +03:00 committed by David S. Miller
parent dacc4e3acf
commit 9785b92b44
3 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/mellanox/mlxsw/reg.h
View File

@ -5548,6 +5548,7 @@ enum mlxsw_reg_htgt_trap_group {
MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE, MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE,
MLXSW_REG_HTGT_TRAP_GROUP_SP_FLOW_LOGGING, MLXSW_REG_HTGT_TRAP_GROUP_SP_FLOW_LOGGING,
MLXSW_REG_HTGT_TRAP_GROUP_SP_FID_MISS, MLXSW_REG_HTGT_TRAP_GROUP_SP_FID_MISS,
MLXSW_REG_HTGT_TRAP_GROUP_SP_BFD,
MLXSW_REG_HTGT_TRAP_GROUP_SP_DUMMY, MLXSW_REG_HTGT_TRAP_GROUP_SP_DUMMY,
MLXSW_REG_HTGT_TRAP_GROUP_SP_L2_DISCARDS, MLXSW_REG_HTGT_TRAP_GROUP_SP_L2_DISCARDS,
MLXSW_REG_HTGT_TRAP_GROUP_SP_L3_DISCARDS, MLXSW_REG_HTGT_TRAP_GROUP_SP_L3_DISCARDS,

7
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -4093,6 +4093,8 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV6, TRAP_TO_CPU, IP2ME, false), MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV6, TRAP_TO_CPU, IP2ME, false),
MLXSW_SP_RXL_MARK(IPV4_VRRP, TRAP_TO_CPU, VRRP, false), MLXSW_SP_RXL_MARK(IPV4_VRRP, TRAP_TO_CPU, VRRP, false),
MLXSW_SP_RXL_MARK(IPV6_VRRP, TRAP_TO_CPU, VRRP, false), MLXSW_SP_RXL_MARK(IPV6_VRRP, TRAP_TO_CPU, VRRP, false),
MLXSW_SP_RXL_MARK(IPV4_BFD, TRAP_TO_CPU, BFD, false),
MLXSW_SP_RXL_MARK(IPV6_BFD, TRAP_TO_CPU, BFD, false),
MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_SIP_CLASS_E, FORWARD, MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_SIP_CLASS_E, FORWARD,
ROUTER_EXP, false), ROUTER_EXP, false),
MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_MC_DMAC, FORWARD, MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_MC_DMAC, FORWARD,
@ -4185,6 +4187,10 @@ static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core)
rate = 360; rate = 360;
burst_size = 7; burst_size = 7;
break; break;
case MLXSW_REG_HTGT_TRAP_GROUP_SP_BFD:
rate = 20 * 1024;
burst_size = 10;
break;
default: default:
continue; continue;
} }
@ -4226,6 +4232,7 @@ static int mlxsw_sp_trap_groups_set(struct mlxsw_core *mlxsw_core)
case MLXSW_REG_HTGT_TRAP_GROUP_SP_PIM: case MLXSW_REG_HTGT_TRAP_GROUP_SP_PIM:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_PTP0: case MLXSW_REG_HTGT_TRAP_GROUP_SP_PTP0:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_VRRP: case MLXSW_REG_HTGT_TRAP_GROUP_SP_VRRP:
case MLXSW_REG_HTGT_TRAP_GROUP_SP_BFD:
priority = 5; priority = 5;
tc = 5; tc = 5;
break; break;

2
drivers/net/ethernet/mellanox/mlxsw/trap.h
View File

@ -66,6 +66,8 @@ enum {
MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1, MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1,
MLXSW_TRAP_ID_NVE_DECAP_ARP = 0xB8, MLXSW_TRAP_ID_NVE_DECAP_ARP = 0xB8,
MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD, MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD,
MLXSW_TRAP_ID_IPV4_BFD = 0xD0,
MLXSW_TRAP_ID_IPV6_BFD = 0xD1,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6, MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7, MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
MLXSW_TRAP_ID_DISCARD_NON_ROUTABLE = 0x11A, MLXSW_TRAP_ID_DISCARD_NON_ROUTABLE = 0x11A,