cxgb4vf: Use __dev_uc_sync/__dev_mc_sync to sync MAC address

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 71 insertions, 17 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
index b6fa74aafe47..54220117dcba 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
@@ -236,23 +236,6 @@ int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size,
 	return -ETIMEDOUT;
 }
 
-/**
- *	hash_mac_addr - return the hash value of a MAC address
- *	@addr: the 48-bit Ethernet MAC address
- *
- *	Hashes a MAC address according to the hash function used by hardware
- *	inexact (hash) address matching.
- */
-static int hash_mac_addr(const u8 *addr)
-{
-	u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2];
-	u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5];
-	a ^= b;
-	a ^= (a >> 12);
-	a ^= (a >> 6);
-	return a & 0x3f;
-}
-
 #define ADVERT_MASK (FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G |\
 		     FW_PORT_CAP_SPEED_10G | FW_PORT_CAP_SPEED_40G | \
 		     FW_PORT_CAP_SPEED_100G | FW_PORT_CAP_ANEG)
@@ -1266,6 +1249,77 @@ int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free,
 }
 
 /**
+ *	t4vf_free_mac_filt - frees exact-match filters of given MAC addresses
+ *	@adapter: the adapter
+ *	@viid: the VI id
+ *	@naddr: the number of MAC addresses to allocate filters for (up to 7)
+ *	@addr: the MAC address(es)
+ *	@sleep_ok: call is allowed to sleep
+ *
+ *	Frees the exact-match filter for each of the supplied addresses
+ *
+ *	Returns a negative error number or the number of filters freed.
+ */
+int t4vf_free_mac_filt(struct adapter *adapter, unsigned int viid,
+		       unsigned int naddr, const u8 **addr, bool sleep_ok)
+{
+	int offset, ret = 0;
+	struct fw_vi_mac_cmd cmd;
+	unsigned int nfilters = 0;
+	unsigned int max_naddr = adapter->params.arch.mps_tcam_size;
+	unsigned int rem = naddr;
+
+	if (naddr > max_naddr)
+		return -EINVAL;
+
+	for (offset = 0; offset < (int)naddr ; /**/) {
+		unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact) ?
+					 rem : ARRAY_SIZE(cmd.u.exact));
+		size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
+						     u.exact[fw_naddr]), 16);
+		struct fw_vi_mac_exact *p;
+		int i;
+
+		memset(&cmd, 0, sizeof(cmd));
+		cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
+				     FW_CMD_REQUEST_F |
+				     FW_CMD_WRITE_F |
+				     FW_CMD_EXEC_V(0) |
+				     FW_VI_MAC_CMD_VIID_V(viid));
+		cmd.freemacs_to_len16 =
+				cpu_to_be32(FW_VI_MAC_CMD_FREEMACS_V(0) |
+					    FW_CMD_LEN16_V(len16));
+
+		for (i = 0, p = cmd.u.exact; i < (int)fw_naddr; i++, p++) {
+			p->valid_to_idx = cpu_to_be16(
+				FW_VI_MAC_CMD_VALID_F |
+				FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_MAC_BASED_FREE));
+			memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
+		}
+
+		ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &cmd,
+					sleep_ok);
+		if (ret)
+			break;
+
+		for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
+			u16 index = FW_VI_MAC_CMD_IDX_G(
+						be16_to_cpu(p->valid_to_idx));
+
+			if (index < max_naddr)
+				nfilters++;
+		}
+
+		offset += fw_naddr;
+		rem -= fw_naddr;
+	}
+
+	if (ret == 0)
+		ret = nfilters;
+	return ret;
+}
+
+/**
  *	t4vf_change_mac - modifies the exact-match filter for a MAC address
  *	@adapter: the adapter
  *	@viid: the Virtual Interface ID