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| author | Edward Cree <ecree@solarflare.com> | 2017-06-29 16:50:06 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-29 15:59:38 -0400 |
| commit | d58299a478c416c0b48e4b31c6332fe7beb63000 (patch) | |
| tree | 7e1c5c96244bdb703fae5368db5f9c146e05e427 | |
| parent | e44699d2c28067f69698ccb68dd3ddeacfebc434 (diff) | |
| download | linux-d58299a478c416c0b48e4b31c6332fe7beb63000.tar.gz linux-d58299a478c416c0b48e4b31c6332fe7beb63000.tar.bz2 linux-d58299a478c416c0b48e4b31c6332fe7beb63000.zip | |
sfc: fix attempt to translate invalid filter ID
When filter insertion fails with no rollback, we were trying to convert
EFX_EF10_FILTER_ID_INVALID to an id to store in 'ids' (which is either
vlan->uc or vlan->mc). This would WARN_ON_ONCE and then record a bogus
filter ID of 0x1fff, neither of which is a good thing.
Fixes: 0ccb998bf46d ("sfc: fix filter_id misinterpretation in edge case")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index a8089667fc5b..78f9e43420e0 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -5105,6 +5105,7 @@ static int efx_ef10_filter_insert_addr_list(struct efx_nic *efx, /* Insert/renew filters */ for (i = 0; i < addr_count; i++) { + EFX_WARN_ON_PARANOID(ids[i] != EFX_EF10_FILTER_ID_INVALID); efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO, filter_flags, 0); efx_filter_set_eth_local(&spec, vlan->vid, addr_list[i].addr); rc = efx_ef10_filter_insert(efx, &spec, true); @@ -5122,11 +5123,11 @@ static int efx_ef10_filter_insert_addr_list(struct efx_nic *efx, } return rc; } else { - /* mark as not inserted, and carry on */ - rc = EFX_EF10_FILTER_ID_INVALID; + /* keep invalid ID, and carry on */ } + } else { + ids[i] = efx_ef10_filter_get_unsafe_id(rc); } - ids[i] = efx_ef10_filter_get_unsafe_id(rc); } if (multicast && rollback) { |