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mlxsw: spectrum_router: Set offload_failed flag 

When FIB_EVENT_ENTRY_{REPLACE, APPEND} are triggered and route insertion
fails, FIB abort is triggered.

After aborting, set the appropriate hardware flag to make the kernel emit
RTM_NEWROUTE notification with RTM_F_OFFLOAD_FAILED flag.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Cohen 2021-02-07 10:22:57 +02:00 committed by David S. Miller
parent 134c753242
commit a4cb1c02c3
1 changed files with 52 additions and 0 deletions
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52
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@ -4942,6 +4942,25 @@ mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp,
return NULL;
}
static void
mlxsw_sp_fib4_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
struct fib_entry_notifier_info *fen_info)
{
u32 *p_dst = (u32 *) &fen_info->dst;
struct fib_rt_info fri;
fri.fi = fen_info->fi;
fri.tb_id = fen_info->tb_id;
fri.dst = cpu_to_be32(*p_dst);
fri.dst_len = fen_info->dst_len;
fri.tos = fen_info->tos;
fri.type = fen_info->type;
fri.offload = false;
fri.trap = false;
fri.offload_failed = true;
fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri);
}
static void
mlxsw_sp_fib4_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fib_entry *fib_entry)
@ -4990,6 +5009,30 @@ mlxsw_sp_fib4_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp,
fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri);
}
#if IS_ENABLED(CONFIG_IPV6)
static void
mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
struct fib6_info **rt_arr,
unsigned int nrt6)
{
int i;
/* In IPv6 a multipath route is represented using multiple routes, so
* we need to set the flags on all of them.
*/
for (i = 0; i < nrt6; i++)
fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), rt_arr[i],
false, false, true);
}
#else
static void
mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
struct fib6_info **rt_arr,
unsigned int nrt6)
{
}
#endif
#if IS_ENABLED(CONFIG_IPV6)
static void
mlxsw_sp_fib6_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
@ -7023,6 +7066,8 @@ static void mlxsw_sp_router_fib4_event_process(struct mlxsw_sp *mlxsw_sp,
if (err) {
mlxsw_sp_fib_entry_op_ctx_priv_put_all(op_ctx);
mlxsw_sp_router_fib_abort(mlxsw_sp);
mlxsw_sp_fib4_offload_failed_flag_set(mlxsw_sp,
&fib_event->fen_info);
}
fib_info_put(fib_event->fen_info.fi);
break;
@ -7044,6 +7089,7 @@ static void mlxsw_sp_router_fib6_event_process(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
struct mlxsw_sp_fib_event *fib_event)
{
struct mlxsw_sp_fib6_event *fib6_event = &fib_event->fib6_event;
int err;
mlxsw_sp_span_respin(mlxsw_sp);
@ -7055,6 +7101,9 @@ static void mlxsw_sp_router_fib6_event_process(struct mlxsw_sp *mlxsw_sp,
if (err) {
mlxsw_sp_fib_entry_op_ctx_priv_put_all(op_ctx);
mlxsw_sp_router_fib_abort(mlxsw_sp);
mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp,
fib6_event->rt_arr,
fib6_event->nrt6);
}
mlxsw_sp_router_fib6_event_fini(&fib_event->fib6_event);
break;
@ -7064,6 +7113,9 @@ static void mlxsw_sp_router_fib6_event_process(struct mlxsw_sp *mlxsw_sp,
if (err) {
mlxsw_sp_fib_entry_op_ctx_priv_put_all(op_ctx);
mlxsw_sp_router_fib_abort(mlxsw_sp);
mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp,
fib6_event->rt_arr,
fib6_event->nrt6);
}
mlxsw_sp_router_fib6_event_fini(&fib_event->fib6_event);
break;