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net: mscc: ocelot: fix using match before it is set

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commit baa59504c1cd0cca7d41954a45ee0b3dc78e41a0 upstream.

Clang static analysis reports this issue
ocelot_flower.c:563:8: warning: 1st function call argument
  is an uninitialized value
    !is_zero_ether_addr(match.mask->dst)) {
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The variable match is used before it is set.  So move the
block.

Fixes: 75944fda1dfe ("net: mscc: ocelot: offload ingress skbedit and vlan actions to VCAP IS1")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tom Rix 2022-01-18 05:41:10 -08:00 committed by Greg Kroah-Hartman
parent ee64479c9c
commit 4496e4a427
1 changed files with 8 additions and 7 deletions
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15
drivers/net/ethernet/mscc/ocelot_flower.c
View File

@ -462,13 +462,6 @@ ocelot_flower_parse_key(struct ocelot *ocelot, int port, bool ingress,
return -EOPNOTSUPP;
}
if (filter->block_id == VCAP_IS1 &&
!is_zero_ether_addr(match.mask->dst)) {
NL_SET_ERR_MSG_MOD(extack,
"Key type S1_NORMAL cannot match on destination MAC");
return -EOPNOTSUPP;
}
/* The hw support mac matches only for MAC_ETYPE key,
* therefore if other matches(port, tcp flags, etc) are added
* then just bail out
@ -483,6 +476,14 @@ ocelot_flower_parse_key(struct ocelot *ocelot, int port, bool ingress,
return -EOPNOTSUPP;
flow_rule_match_eth_addrs(rule, &match);
if (filter->block_id == VCAP_IS1 &&
!is_zero_ether_addr(match.mask->dst)) {
NL_SET_ERR_MSG_MOD(extack,
"Key type S1_NORMAL cannot match on destination MAC");
return -EOPNOTSUPP;
}
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
ether_addr_copy(filter->key.etype.dmac.value,
match.key->dst);