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authorNir Dotan <nird@mellanox.com>2018-08-03 15:57:42 +0300
committerDavid S. Miller <davem@davemloft.net>2018-08-03 12:28:01 -0700
commitdda0a3a3fb92451d4a922e56365ee1f73c8a9586 (patch)
treeaad071e4ac4d01331af1b247f99483c45c36121f /certs/system_keyring.c
parent3757b255bf20ae3c941abae7624ff215bfd9ef05 (diff)
download96b-common-dda0a3a3fb92451d4a922e56365ee1f73c8a9586.tar.gz
mlxsw: core_acl_flex_actions: Remove redundant resource destruction
Some ACL actions require the allocation of a separate resource prior to applying the action itself. When facing an error condition during the setup phase of the action, resource should be destroyed. For such actions the destruction was done twice which is dangerous and lead to a potential crash. The destruction took place first upon error on action setup phase and then as the rule was destroyed. The following sequence generated a crash: # tc qdisc add dev swp49 ingress # tc filter add dev swp49 parent ffff: \ protocol ip chain 100 pref 10 \ flower skip_sw dst_ip 192.168.101.1 action drop # tc filter add dev swp49 parent ffff: \ protocol ip pref 10 \ flower skip_sw dst_ip 192.168.101.1 action goto chain 100 \ action mirred egress mirror dev swp4 Therefore add mlxsw_afa_resource_del() as a complement of mlxsw_afa_resource_add() to add symmetry to resource_list membership handling. Call this from mlxsw_afa_fwd_entry_ref_destroy() to make the _fwd_entry_ref_create() and _fwd_entry_ref_destroy() pair of calls a NOP. Fixes: 140ce421217e ("mlxsw: core: Convert fwd_entry_ref list to be generic per-block resource list") Signed-off-by: Nir Dotan <nird@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'certs/system_keyring.c')
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