[PATCH v3 net-next 2/4] cxgb4: Add MPS TCAM refcounting for raw mac filters

[Raju Rangoju]

This patch adds TCAM reference counting
support for raw mac filters.

Signed-off-by: Raju Rangoju <ra...@chelsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4.h     | 16 +++++++++
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_mps.c | 46 ++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h 
b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 39ccd4c64d48..c7ab57fd03be 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1919,5 +1919,21 @@ int cxgb4_alloc_encap_mac_filt(struct adapter *adap, 
unsigned int viid,
                               u8 dip_hit, u8 lookup_type, bool sleep_ok);
 int cxgb4_free_encap_mac_filt(struct adapter *adap, unsigned int viid,
                              int idx, bool sleep_ok);
+int cxgb4_free_raw_mac_filt(struct adapter *adap,
+                           unsigned int viid,
+                           const u8 *addr,
+                           const u8 *mask,
+                           unsigned int idx,
+                           u8 lookup_type,
+                           u8 port_id,
+                           bool sleep_ok);
+int cxgb4_alloc_raw_mac_filt(struct adapter *adap,
+                            unsigned int viid,
+                            const u8 *addr,
+                            const u8 *mask,
+                            unsigned int idx,
+                            u8 lookup_type,
+                            u8 port_id,
+                            bool sleep_ok);
 
 #endif /* __CXGB4_H__ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_mps.c 
b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_mps.c
index b8a5375bf64d..b942748c7dfa 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_mps.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_mps.c
@@ -54,6 +54,52 @@ static int cxgb4_mps_ref_inc(struct adapter *adap, const u8 
*mac_addr,
        return ret;
 }
 
+int cxgb4_free_raw_mac_filt(struct adapter *adap,
+                           unsigned int viid,
+                           const u8 *addr,
+                           const u8 *mask,
+                           unsigned int idx,
+                           u8 lookup_type,
+                           u8 port_id,
+                           bool sleep_ok)
+{
+       int ret = 0;
+
+       if (!cxgb4_mps_ref_dec(adap, idx))
+               ret = t4_free_raw_mac_filt(adap, viid, addr,
+                                          mask, idx, lookup_type,
+                                          port_id, sleep_ok);
+
+       return ret;
+}
+
+int cxgb4_alloc_raw_mac_filt(struct adapter *adap,
+                            unsigned int viid,
+                            const u8 *addr,
+                            const u8 *mask,
+                            unsigned int idx,
+                            u8 lookup_type,
+                            u8 port_id,
+                            bool sleep_ok)
+{
+       int ret;
+
+       ret = t4_alloc_raw_mac_filt(adap, viid, addr,
+                                   mask, idx, lookup_type,
+                                   port_id, sleep_ok);
+       if (ret < 0)
+               return ret;
+
+       if (cxgb4_mps_ref_inc(adap, addr, ret, mask)) {
+               ret = -ENOMEM;
+               t4_free_raw_mac_filt(adap, viid, addr,
+                                    mask, idx, lookup_type,
+                                    port_id, sleep_ok);
+       }
+
+       return ret;
+}
+
 int cxgb4_free_encap_mac_filt(struct adapter *adap, unsigned int viid,
                              int idx, bool sleep_ok)
 {
-- 
2.12.0