@@ -1081,13 +1081,13 @@ static int mvpp2_port_c2_tcam_rule_add(struct mvpp2_port *port,
rule->c2_index = c2.index;
- c2.tcam[0] = (rule->c2_tcam & 0xffff) |
+ c2.tcam[3] = (rule->c2_tcam & 0xffff) |
((rule->c2_tcam_mask & 0xffff) << 16);
- c2.tcam[1] = ((rule->c2_tcam >> 16) & 0xffff) |
+ c2.tcam[2] = ((rule->c2_tcam >> 16) & 0xffff) |
(((rule->c2_tcam_mask >> 16) & 0xffff) << 16);
- c2.tcam[2] = ((rule->c2_tcam >> 32) & 0xffff) |
+ c2.tcam[1] = ((rule->c2_tcam >> 32) & 0xffff) |
(((rule->c2_tcam_mask >> 32) & 0xffff) << 16);
- c2.tcam[3] = ((rule->c2_tcam >> 48) & 0xffff) |
+ c2.tcam[0] = ((rule->c2_tcam >> 48) & 0xffff) |
(((rule->c2_tcam_mask >> 48) & 0xffff) << 16);
pmap = BIT(port->id);
@@ -1222,7 +1222,7 @@ static int mvpp2_port_flt_rfs_rule_insert(struct mvpp2_port *port,
static int mvpp2_cls_c2_build_match(struct mvpp2_rfs_rule *rule)
{
struct flow_rule *flow = rule->flow;
- int offs = 64;
+ int offs = 0;
if (flow_rule_match_key(flow, FLOW_DISSECTOR_KEY_PORTS)) {
struct flow_match_ports match;
@@ -1230,18 +1230,18 @@ static int mvpp2_cls_c2_build_match(struct mvpp2_rfs_rule *rule)
flow_rule_match_ports(flow, &match);
if (match.mask->src) {
rule->hek_fields |= MVPP22_CLS_HEK_OPT_L4SIP;
- offs -= mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4SIP);
rule->c2_tcam |= ((u64)ntohs(match.key->src)) << offs;
rule->c2_tcam_mask |= ((u64)ntohs(match.mask->src)) << offs;
+ offs += mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4SIP);
}
if (match.mask->dst) {
rule->hek_fields |= MVPP22_CLS_HEK_OPT_L4DIP;
- offs -= mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4DIP);
rule->c2_tcam |= ((u64)ntohs(match.key->dst)) << offs;
rule->c2_tcam_mask |= ((u64)ntohs(match.mask->dst)) << offs;
+ offs += mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4DIP);
}
}
The C2 TCAM used for classification uses a key (Header Extracted Key) built by concatenating several fields extracted from the packet header. After a lot of trial-and-error and some guess work, it seems the HEK is right justified, with the first fields being stored in the MSB, then concatenated up until the LSB. Until now, this doesn't cause any issue since all HEK fields we use are full bytes. However this is an issue for the upcoming VLAN id and pri extraction, which aren't full bytes. Rework the way we built that TCAM key, by changing the order in which we append the fields. Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> --- drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)