mwifiex: add packet coalesce support

Coalesce filters are configured in firmware based on settings
received from cfg80211.

Packet type which is required by firmware is determined based on
provided patterns in a rule:

Unicast: if pattern '01' with offset 0 is found
Multicast: if pattern '33:33' or '01:00:5e' with offset 0 is found
Broadcast: if pattern 'ff:ff:ff:ff' with offset 0 is found

Some example coalesce configuration files:

1) Coalesce Rx data packets from 192.168.0.88
mac address of our device is 00:50:43:21:53:7A
Source IP address offset comes out as 52 after following
calculations:
    32 bytes of HW 802.11 header + 8 bytes LLC +
    12 bytes in IPV4 header till source IP address
Destination mac is at offset 6 in HW header.

delay=100
condition=1
patterns=01,6+00:50:43:22,10+53:7A,52+c0:a8:00:58

2) Coalesce all broadcast and multicast packets(Multiple packet
types are not allowed in a single rule. Hence created separate
rules)

delay=400
condition=1
patterns=33:33
delay=400
condition=1
patterns=ff:ff:ff:ff

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index 12c6223ebb8c..c9ad1c0d338d 100644
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -153,6 +153,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define TLV_TYPE_UAP_PS_AO_TIMER    (PROPRIETARY_TLV_BASE_ID + 123)
 #define TLV_TYPE_PWK_CIPHER         (PROPRIETARY_TLV_BASE_ID + 145)
 #define TLV_TYPE_GWK_CIPHER         (PROPRIETARY_TLV_BASE_ID + 146)
+#define TLV_TYPE_COALESCE_RULE      (PROPRIETARY_TLV_BASE_ID + 154)
 
 #define MWIFIEX_TX_DATA_BUF_SIZE_2K        2048
 
@@ -294,6 +295,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define HostCmd_CMD_CAU_REG_ACCESS                    0x00ed
 #define HostCmd_CMD_SET_BSS_MODE                      0x00f7
 #define HostCmd_CMD_PCIE_DESC_DETAILS                 0x00fa
+#define HostCmd_CMD_COALESCE_CFG                      0x010a
 #define HostCmd_CMD_MGMT_FRAME_REG                    0x010c
 #define HostCmd_CMD_REMAIN_ON_CHAN                    0x010d
 #define HostCmd_CMD_11AC_CFG                          0x0112
@@ -1596,6 +1598,27 @@ struct host_cmd_ds_802_11_cfg_data {
         __le16 data_len;
 } __packed;
 
+struct coalesce_filt_field_param {
+        u8 operation;
+        u8 operand_len;
+        __le16 offset;
+        u8 operand_byte_stream[4];
+};
+
+struct coalesce_receive_filt_rule {
+        struct mwifiex_ie_types_header header;
+        u8 num_of_fields;
+        u8 pkt_type;
+        __le16 max_coalescing_delay;
+        struct coalesce_filt_field_param params[0];
+} __packed;
+
+struct host_cmd_ds_coalesce_cfg {
+        __le16 action;
+        __le16 num_of_rules;
+        struct coalesce_receive_filt_rule rule[0];
+} __packed;
+
 struct host_cmd_ds_command {
         __le16 command;
         __le16 size;
@@ -1656,6 +1679,7 @@ struct host_cmd_ds_command {
                 struct host_cmd_ds_sta_deauth sta_deauth;
                 struct host_cmd_11ac_vht_cfg vht_cfg;
                 struct host_cmd_ds_802_11_cfg_data cfg_data;
+                struct host_cmd_ds_coalesce_cfg coalesce_cfg;
         } params;
 } __packed;