diff options
| author | Horatiu Vultur <horatiu.vultur@microchip.com> | 2022-04-09 21:41:43 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-04-12 06:47:15 +0300 |
| commit | 269219321eb7d7645a3122cf40a420c5dc655eb9 (patch) | |
| tree | 8d2ec3804428f290a4ee013ba02173407cf7d5d0 /drivers/net/ethernet | |
| parent | d7a947d289dc205fc717c004dcebe33b15305afd (diff) | |
| download | linux-269219321eb7d7645a3122cf40a420c5dc655eb9.tar.xz | |
net: lan966x: Stop processing the MAC entry is port is wrong.
Currently when getting a new MAC is learn, the HW generates an
interrupt. So then the SW will check the new entry and checks if it
arrived on a correct port. If it didn't just generate a warning.
But this could still crash the system. Therefore stop processing that
entry when an issue is seen.
Fixes: 5ccd66e01cbef8 ("net: lan966x: add support for interrupts from analyzer")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan966x/lan966x_mac.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c index ce5970bdcc6a..2679111ef669 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c @@ -346,7 +346,8 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row, lan966x_mac_process_raw_entry(&raw_entries[column], mac, &vid, &dest_idx); - WARN_ON(dest_idx > lan966x->num_phys_ports); + if (WARN_ON(dest_idx > lan966x->num_phys_ports)) + continue; /* If the entry in SW is found, then there is nothing * to do @@ -392,7 +393,8 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row, lan966x_mac_process_raw_entry(&raw_entries[column], mac, &vid, &dest_idx); - WARN_ON(dest_idx > lan966x->num_phys_ports); + if (WARN_ON(dest_idx > lan966x->num_phys_ports)) + continue; mac_entry = lan966x_mac_alloc_entry(mac, vid, dest_idx); if (!mac_entry) |