changes:
igb: remove old functions that deal with flex filter
igb: add new functions that deal with flex filter(fit for new API)
testpmd: change the entry for flex filter in cmdline
testpmd: change function call to get flex filter in config
doc: change doc that describes how to use flex filter related functions

Signed-off-by: Zhida Zang <zhida.zang at intel.com>
---
 app/test-pmd/cmdline.c                      | 244 ++++++++++----------
 app/test-pmd/config.c                       |  37 ++--
 app/test-pmd/testpmd.h                      |   2 +-
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  56 ++---
 lib/librte_ether/rte_eth_ctrl.h             |  20 ++
 lib/librte_pmd_e1000/e1000_ethdev.h         |  20 ++
 lib/librte_pmd_e1000/igb_ethdev.c           | 331 +++++++++++++++++-----------
 7 files changed, 410 insertions(+), 300 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 4beb404..2f99d23 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -691,14 +691,19 @@ static void cmd_help_long_parsed(void *parsed_result,
                        "get_syn_filter (port_id) "
                        "    get syn filter info.\n\n"

-                       "add_flex_filter (port_id) len (len_value) bytes 
(bytes_string) mask (mask_value)"
-                       " priority (prio_value) queue (queue_id) index (idx)\n"
+                       "flex_filter add (port_id) len (len_value)"
+                       " bytes (bytes_string) mask (mask_value)"
+                       " priority (prio_value) queue (queue_id)\n"
                        "    add a flex filter.\n\n"

-                       "remove_flex_filter (port_id) index (idx)\n"
-                       "    remove a flex filter.\n\n"
+                       "flex_filter del (port_id) len (len_value)"
+                       " bytes (bytes_string) mask (mask_value)"
+                       " priority (prio_value)\n"
+                       "    del a flex filter.\n\n"

-                       "get_flex_filter (port_id) index (idx)\n"
+                       "flex_filter get (port_id) len (len_value)"
+                       " bytes (bytes_string) mask (mask_value)"
+                       "priority (prio_value)\n"
                        "    get info of a flex filter.\n\n"

                        "flow_director_filter (port_id) (add|del)"
@@ -7723,9 +7728,10 @@ cmdline_parse_inst_t cmd_get_5tuple_filter = {
        },
 };

-/* *** ADD/REMOVE A flex FILTER *** */
+/* *** Add/Del/Get flex filter *** */
 struct cmd_flex_filter_result {
        cmdline_fixed_string_t filter;
+       cmdline_fixed_string_t ops;
        uint8_t port_id;
        cmdline_fixed_string_t len;
        uint8_t len_value;
@@ -7737,8 +7743,6 @@ struct cmd_flex_filter_result {
        uint8_t priority_value;
        cmdline_fixed_string_t queue;
        uint16_t queue_id;
-       cmdline_fixed_string_t index;
-       uint16_t index_value;
 };

 static int xdigit2val(unsigned char c)
@@ -7759,105 +7763,101 @@ cmd_flex_filter_parsed(void *parsed_result,
                          __attribute__((unused)) void *data)
 {
        int ret = 0;
-       struct rte_flex_filter filter;
+       struct rte_eth_flex_filter filter;
        struct cmd_flex_filter_result *res = parsed_result;
        char *bytes_ptr, *mask_ptr;
        uint16_t len, i, j;
        char c;
-       int val, mod = 0;
-       uint32_t dword = 0;
+       int val;
        uint8_t byte = 0;
        uint8_t hex = 0;

-       if (!strcmp(res->filter, "add_flex_filter")) {
-               if (res->len_value > 128) {
-                       printf("the len exceed the max length 128\n");
-                       return;
-               }
-               memset(&filter, 0, sizeof(struct rte_flex_filter));
-               filter.len = res->len_value;
-               filter.priority = res->priority_value;
-               bytes_ptr = res->bytes_value;
-               mask_ptr = res->mask_value;
-
-               j = 0;
-                /* translate bytes string to uint_32 array. */
-               if (bytes_ptr[0] == '0' && ((bytes_ptr[1] == 'x') ||
-                       (bytes_ptr[1] == 'X')))
-                       bytes_ptr += 2;
-               len = strnlen(bytes_ptr, res->len_value * 2);
-               if (len == 0 || (len % 8 != 0)) {
-                       printf("please check len and bytes input\n");
+       if (res->len_value > 128) {
+               printf("the len exceed the max length 128\n");
+               return;
+       }
+       memset(&filter, 0, sizeof(struct rte_eth_flex_filter));
+       filter.len = res->len_value;
+       filter.priority = res->priority_value;
+       filter.queue = res->queue_id;
+       bytes_ptr = res->bytes_value;
+       mask_ptr = res->mask_value;
+
+       j = 0;
+        /* translate bytes string to uint_32 array. */
+       if (bytes_ptr[0] == '0' && ((bytes_ptr[1] == 'x') ||
+               (bytes_ptr[1] == 'X')))
+               bytes_ptr += 2;
+       len = strnlen(bytes_ptr, res->len_value * 2);
+       if (len == 0 || (len % 8 != 0)) {
+               printf("please check len and bytes input\n");
+               return;
+       }
+       for (i = 0; i < len; i++) {
+               c = bytes_ptr[i];
+               if (isxdigit(c) == 0) {
+                       /* invalid characters. */
+                       printf("invalid input\n");
                        return;
                }
-               for (i = 0; i < len; i++) {
-                       c = bytes_ptr[i];
-                       if (isxdigit(c) == 0) {
-                               /* invalid characters. */
-                               printf("invalid input\n");
-                               return;
-                       }
-                       val = xdigit2val(c);
-                       mod = i % 8;
-                       if (i % 2) {
-                               byte |= val;
-                               dword |= byte << (4 * mod - 4);
-                               byte = 0;
-                       } else
-                               byte |= val << 4;
-                       if (mod == 7) {
-                               filter.dwords[j] = dword;
-                               printf("dwords[%d]:%08x ", j, filter.dwords[j]);
-                               j++;
-                               dword = 0;
-                       }
-               }
-               printf("\n");
-                /* translate mask string to uint8_t array. */
-               j = 0;
-               if (mask_ptr[0] == '0' && ((mask_ptr[1] == 'x') ||
-                       (mask_ptr[1] == 'X')))
-                       mask_ptr += 2;
-               len = strnlen(mask_ptr, (res->len_value+3)/4);
-               if (len == 0) {
+               val = xdigit2val(c);
+               if (i % 2) {
+                       byte |= val;
+                       filter.bytes[j] = byte;
+                       printf("bytes[%d]:%02x ", j, filter.bytes[j]);
+                       j++;
+                       byte = 0;
+               } else
+                       byte |= val << 4;
+       }
+       printf("\n");
+        /* translate mask string to uint8_t array. */
+       j = 0;
+       if (mask_ptr[0] == '0' && ((mask_ptr[1] == 'x') ||
+               (mask_ptr[1] == 'X')))
+               mask_ptr += 2;
+       len = strnlen(mask_ptr, (res->len_value+3)/4);
+       if (len == 0) {
+               printf("invalid input\n");
+               return;
+       }
+       for (i = 0; i < len; i++) {
+               c = mask_ptr[i];
+               if (isxdigit(c) == 0) {
+                       /* invalid characters. */
                        printf("invalid input\n");
                        return;
                }
-               for (i = 0; i < len; i++) {
-                       c = mask_ptr[i];
-                       if (isxdigit(c) == 0) {
-                               /* invalid characters. */
-                               printf("invalid input\n");
-                               return;
-                       }
-                       val = xdigit2val(c);
-                       hex |= (uint8_t)(val & 0x8) >> 3;
-                       hex |= (uint8_t)(val & 0x4) >> 1;
-                       hex |= (uint8_t)(val & 0x2) << 1;
-                       hex |= (uint8_t)(val & 0x1) << 3;
-                       if (i % 2) {
-                               byte |= hex << 4;
-                               filter.mask[j] = byte;
-                               printf("mask[%d]:%02x ", j, filter.mask[j]);
-                               j++;
-                               byte = 0;
-                       } else
-                               byte |= hex;
-                       hex = 0;
-               }
-               printf("\n");
-               printf("call function rte_eth_dev_add_flex_filter: "
-                       "index = %d, queue-id = %d, len = %d, priority = %d\n",
-                       res->index_value, res->queue_id,
-                       filter.len, filter.priority);
-               ret = rte_eth_dev_add_flex_filter(res->port_id, 
res->index_value,
-                               &filter, res->queue_id);
+               val = xdigit2val(c);
+               hex |= (uint8_t)(val & 0x8) >> 3;
+               hex |= (uint8_t)(val & 0x4) >> 1;
+               hex |= (uint8_t)(val & 0x2) << 1;
+               hex |= (uint8_t)(val & 0x1) << 3;
+               if (i % 2) {
+                       byte |= hex << 4;
+                       filter.mask[j] = byte;
+                       printf("mask[%d]:%02x ", j, filter.mask[j]);
+                       j++;
+                       byte = 0;
+               } else
+                       byte |= hex;
+               hex = 0;
+       }
+       printf("\n");

-       } else if (!strcmp(res->filter, "remove_flex_filter"))
-               ret = rte_eth_dev_remove_flex_filter(res->port_id,
-                       res->index_value);
-       else if (!strcmp(res->filter, "get_flex_filter"))
-               get_flex_filter(res->port_id, res->index_value);
+       if (!strcmp(res->ops, "add"))
+               ret = rte_eth_dev_filter_ctrl(res->port_id,
+                               RTE_ETH_FILTER_FLEXIBLE,
+                               RTE_ETH_FILTER_ADD,
+                               &filter);
+
+       else if (!strcmp(res->ops, "del"))
+               ret = rte_eth_dev_filter_ctrl(res->port_id,
+                               RTE_ETH_FILTER_FLEXIBLE,
+                               RTE_ETH_FILTER_DELETE,
+                               &filter);
+       else if (!strcmp(res->ops, "get"))
+               get_flex_filter(res->port_id, &filter);

        if (ret < 0)
                printf("flex filter setting error: (%s)\n", strerror(-ret));
@@ -7896,21 +7896,25 @@ cmdline_parse_token_string_t cmd_flex_filter_queue =
 cmdline_parse_token_num_t cmd_flex_filter_queue_id =
        TOKEN_NUM_INITIALIZER(struct cmd_flex_filter_result,
                                queue_id, UINT16);
-cmdline_parse_token_string_t cmd_flex_filter_index =
+cmdline_parse_token_string_t cmd_flex_filter_add =
        TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
-                               index, "index");
-cmdline_parse_token_num_t cmd_flex_filter_index_value =
-       TOKEN_NUM_INITIALIZER(struct cmd_flex_filter_result,
-                               index_value, UINT16);
-cmdline_parse_token_string_t cmd_flex_filter_add_filter =
+                               ops, "add");
+cmdline_parse_token_string_t cmd_flex_filter_del =
+       TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
+                               ops, "del");
+cmdline_parse_token_string_t cmd_flex_filter_get =
        TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
-                               filter, "add_flex_filter");
+                               ops, "get");
+cmdline_parse_token_string_t cmd_flex_filter_filter =
+       TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
+                               filter, "flex_filter");
 cmdline_parse_inst_t cmd_add_flex_filter = {
        .f = cmd_flex_filter_parsed,
        .data = NULL,
        .help_str = "add a flex filter",
        .tokens = {
-               (void *)&cmd_flex_filter_add_filter,
+               (void *)&cmd_flex_filter_filter,
+               (void *)&cmd_flex_filter_add,
                (void *)&cmd_flex_filter_port_id,
                (void *)&cmd_flex_filter_len,
                (void *)&cmd_flex_filter_len_value,
@@ -7922,40 +7926,44 @@ cmdline_parse_inst_t cmd_add_flex_filter = {
                (void *)&cmd_flex_filter_priority_value,
                (void *)&cmd_flex_filter_queue,
                (void *)&cmd_flex_filter_queue_id,
-               (void *)&cmd_flex_filter_index,
-               (void *)&cmd_flex_filter_index_value,
                NULL,
        },
 };
-
-cmdline_parse_token_string_t cmd_flex_filter_remove_filter =
-       TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
-                               filter, "remove_flex_filter");
 cmdline_parse_inst_t cmd_remove_flex_filter = {
        .f = cmd_flex_filter_parsed,
        .data = NULL,
        .help_str = "remove a flex filter",
        .tokens = {
-               (void *)&cmd_flex_filter_remove_filter,
+               (void *)&cmd_flex_filter_filter,
+               (void *)&cmd_flex_filter_del,
                (void *)&cmd_flex_filter_port_id,
-               (void *)&cmd_flex_filter_index,
-               (void *)&cmd_flex_filter_index_value,
+               (void *)&cmd_flex_filter_len,
+               (void *)&cmd_flex_filter_len_value,
+               (void *)&cmd_flex_filter_bytes,
+               (void *)&cmd_flex_filter_bytes_value,
+               (void *)&cmd_flex_filter_mask,
+               (void *)&cmd_flex_filter_mask_value,
+               (void *)&cmd_flex_filter_priority,
+               (void *)&cmd_flex_filter_priority_value,
                NULL,
        },
 };
-
-cmdline_parse_token_string_t cmd_flex_filter_get_filter =
-       TOKEN_STRING_INITIALIZER(struct cmd_flex_filter_result,
-                               filter, "get_flex_filter");
 cmdline_parse_inst_t cmd_get_flex_filter = {
        .f = cmd_flex_filter_parsed,
        .data = NULL,
        .help_str = "get a flex filter",
        .tokens = {
-               (void *)&cmd_flex_filter_get_filter,
+               (void *)&cmd_flex_filter_filter,
+               (void *)&cmd_flex_filter_get,
                (void *)&cmd_flex_filter_port_id,
-               (void *)&cmd_flex_filter_index,
-               (void *)&cmd_flex_filter_index_value,
+               (void *)&cmd_flex_filter_len,
+               (void *)&cmd_flex_filter_len_value,
+               (void *)&cmd_flex_filter_bytes,
+               (void *)&cmd_flex_filter_bytes_value,
+               (void *)&cmd_flex_filter_mask,
+               (void *)&cmd_flex_filter_mask_value,
+               (void *)&cmd_flex_filter_priority,
+               (void *)&cmd_flex_filter_priority_value,
                NULL,
        },
 };
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index c40f819..8a44e4a 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -2252,36 +2252,43 @@ get_5tuple_filter(uint8_t port_id, uint16_t index)
                        filter.priority, filter.tcp_flags, rx_queue);
        }
 }
-void
-get_flex_filter(uint8_t port_id, uint16_t index)

+void
+get_flex_filter(uint8_t port_id, struct rte_eth_flex_filter *filter)
 {
-       struct rte_flex_filter filter;
+       struct rte_eth_flex_filter flex_filter;
        int ret = 0;
-       uint16_t rx_queue;
        int i, j;

-       memset(&filter, 0, sizeof(filter));
-       ret = rte_eth_dev_get_flex_filter(port_id, index,
-                               &filter, &rx_queue);
+       memset(&flex_filter, 0, sizeof(flex_filter));
+       flex_filter.len = filter->len;
+       memcpy(flex_filter.bytes, filter->bytes, 128);
+       memcpy(flex_filter.mask, filter->mask, 16);
+       flex_filter.priority = filter->priority;
+       ret = rte_eth_dev_filter_ctrl(port_id,
+                                       RTE_ETH_FILTER_FLEXIBLE,
+                                       RTE_ETH_FILTER_GET,
+                                       &flex_filter);
        if (ret < 0) {
                if (ret == (-ENOENT))
-                       printf("filter[%d] is not enabled\n", index);
+                       printf("filter does not exist\n");
                else
                        printf("get flex filter fails(%s)\n", strerror(-ret));
                return;
        } else {
-               printf("filter[%d]: ", index);
-               printf("\n    length: %d", filter.len);
-               printf("\n    dword[]: 0x");
-               for (i = 0; i < 32; i++)
-                       printf("%08x ", 
(unsigned)rte_be_to_cpu_32(filter.dwords[i]));
+               printf("filter: ");
+               printf("\n    length: %d", flex_filter.len);
+               printf("\n    byte[]: 0x");
+               for (i = 0; i < 8; i++)
+                       printf("%02x ",
+                               (unsigned)flex_filter.bytes[i]);
                printf("\n    mask[]: 0b");
                for (i = 0; i < 16; i++) {
                        for (j = 0; j < 8; j++)
-                               printf("%c", (filter.mask[i] & (1 << j)) ? '1' 
: '0');
+                               printf("%c", (flex_filter.mask[i] & (1 << j))
+                                       ? '1' : '0');
                }
                printf("\n    priority: %d    queue: %d\n",
-                       filter.priority, rx_queue);
+                       flex_filter.priority, flex_filter.queue);
        }
 }
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 8f5e6c7..3f9697f 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -557,7 +557,7 @@ void get_syn_filter(uint8_t port_id);
 void get_ethertype_filter(uint8_t port_id, uint16_t index);
 void get_2tuple_filter(uint8_t port_id, uint16_t index);
 void get_5tuple_filter(uint8_t port_id, uint16_t index);
-void get_flex_filter(uint8_t port_id, uint16_t index);
+void get_flex_filter(uint8_t port_id, struct rte_eth_flex_filter *filter);
 int port_id_is_invalid(portid_t port_id);
 int rx_queue_id_is_invalid(queueid_t rxq_id);
 int tx_queue_id_is_invalid(queueid_t txq_id);
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst 
b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 218835a..0324fc3 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -1595,15 +1595,18 @@ Example:

     syn filter: on, priority: high, queue: 3

-add_flex_filter
+flex_filter
 ~~~~~~~~~~~~~~~

 Add a Flex filter,
 which recognizes any arbitrary pattern within the first 128 bytes of the packet
 and routes packets into one of the receive queues.
+or
+Del(get) a Flex filter,
+which recognizes any arbitrary pattern within the first 128 bytes of the packet

-add_flex_filter (port_id) len (len_value) bytes (bytes_string) mask 
(mask_value)
-priority (prio_value) queue (queue_id) index (idx)
+flex_filter (add|del|get) (port_id) len (len_value) bytes (bytes_string)
+mask (mask_value) priority (prio_value) [queue (queue_id)]

 The available information parameters are:

@@ -1617,49 +1620,18 @@ The available information parameters are:

 *   prio_value: the priority of this filter.

-*   queue_id: The receive queue associated with this Flex filter.
-
-*   index: the index of this Flex filter
+*   queue_id: The receive queue associated with this Flex filter.(used when add
+while del|get not)

 Example:

 .. code-block:: console

-   testpmd> add_flex_filter 0 len 16 bytes 0x00000000000000000000000008060000 
mask 000C priority 3 queue 3 index 0
-
-Assign a packet whose 13th and 14th bytes are 0x0806 to queue 3.
-
-remove_flex_filter
-~~~~~~~~~~~~~~~~~~
-
-Remove a Flex filter
+   testpmd> flex_filter add 0 len 16 bytes 0x00000000000000000000000008060000
+        mask 000C priority 3 queue 3

-remove_flex_filter (port_id) index (idx)
+   testpmd> flex_filter del 0 len 16 bytes 0x00000000000000000000000008060000
+        mask 000C priority 3

-get_flex_filter
-~~~~~~~~~~~~~~~
-
-Get and display a Flex filter
-
-get_flex_filter (port_id) index (idx)
-
-Example:
-
-.. code-block:: console
-
-    testpmd> get_flex_filter 0 index 0
-
-    filter[0]:
-
-        length: 16
-
-        dword[]: 0x00000000 00000000 00000000 08060000 00000000 00000000 
00000000
-    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
-    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
00000000
-    00000000 00000000 00000000 00000000 00000000 00000000 00000000
-
-        mask[]:
-    0b0000000000001100000000000000000000000000000000000000000000000000000000
-    0000000000000000000000000000000000000000000000000000000000
-
-        priority: 3   queue: 3
+   testpmd> flex_filter get 0 len 16 bytes 0x00000000000000000000000008060000
+        mask 000C priority 3
diff --git a/lib/librte_ether/rte_eth_ctrl.h b/lib/librte_ether/rte_eth_ctrl.h
index 5d9c387..03c6b66 100644
--- a/lib/librte_ether/rte_eth_ctrl.h
+++ b/lib/librte_ether/rte_eth_ctrl.h
@@ -55,6 +55,7 @@ enum rte_filter_type {
        RTE_ETH_FILTER_ETHERTYPE,
        RTE_ETH_FILTER_TUNNEL,
        RTE_ETH_FILTER_FDIR,
+       RTE_ETH_FILTER_FLEXIBLE,
        RTE_ETH_FILTER_MAX
 };

@@ -116,6 +117,25 @@ struct rte_eth_ethertype_filter {
        uint16_t queue;               /**< Queue assigned to when match*/
 };

+#define RTE_FLEX_FILTER_MAXLEN 128     /**< bytes to use in flex filter. */
+#define RTE_FLEX_FILTER_MASK_SIZE      \
+       (RTE_ALIGN(RTE_FLEX_FILTER_MAXLEN, sizeof(char)) / sizeof(char))
+                                       /**< mask bytes in flex filter. */
+
+/**
+ *  A structure used to define the flex filter entry
+ *  to support RTE_ETH_FILTER_FLEXIBLE with RTE_ETH_FILTER_ADD,
+ *  RTE_ETH_FILTER_DELETE and RTE_ETH_FILTER_GET operations.
+ */
+struct rte_eth_flex_filter {
+       uint16_t len;
+       uint8_t bytes[RTE_FLEX_FILTER_MAXLEN];  /**< flex bytes in big endian.*/
+       uint8_t mask[RTE_FLEX_FILTER_MASK_SIZE];    /**< if mask bit is 1b, do
+                                       not compare corresponding byte. */
+       uint8_t priority;
+       uint16_t queue;       /**< Queue assigned to when match. */
+};
+
 /**
  * Tunneled type.
  */
diff --git a/lib/librte_pmd_e1000/e1000_ethdev.h 
b/lib/librte_pmd_e1000/e1000_ethdev.h
index d155e77..c054aaf 100644
--- a/lib/librte_pmd_e1000/e1000_ethdev.h
+++ b/lib/librte_pmd_e1000/e1000_ethdev.h
@@ -131,6 +131,24 @@ struct e1000_vf_info {
        uint16_t tx_rate;
 };

+TAILQ_HEAD(e1000_flex_filter_list, e1000_flex_filter);
+
+struct e1000_flex_filter_info {
+       uint16_t len;
+       uint32_t dwords[32];  /**< flex bytes in big endian. */
+       uint8_t mask[16];     /**< if mask bit is 1b, do not compare
+                                  corresponding byte in dwords. */
+       uint8_t priority;
+};
+
+/* Flex filter structure */
+struct e1000_flex_filter {
+       TAILQ_ENTRY(e1000_flex_filter) entries;
+       uint16_t index; /* index of flex filter */
+       struct e1000_flex_filter_info filter_info;
+       uint16_t queue; /* rx queue assigned to */
+};
+
 /*
  * Structure to store filters' info.
  */
@@ -138,6 +156,8 @@ struct e1000_filter_info {
        uint8_t ethertype_mask; /* Bit mask for every used ethertype filter */
        /* store used ethertype filters*/
        uint16_t ethertype_filters[E1000_MAX_ETQF_FILTERS];
+       uint8_t flex_mask;      /* Bit mask for every used flex filter */
+       struct e1000_flex_filter_list flex_list;
 };

 /*
diff --git a/lib/librte_pmd_e1000/igb_ethdev.c 
b/lib/librte_pmd_e1000/igb_ethdev.c
index 2a268b8..eaa8689 100644
--- a/lib/librte_pmd_e1000/igb_ethdev.c
+++ b/lib/librte_pmd_e1000/igb_ethdev.c
@@ -162,14 +162,14 @@ static int eth_igb_remove_2tuple_filter(struct 
rte_eth_dev *dev,
 static int eth_igb_get_2tuple_filter(struct rte_eth_dev *dev,
                        uint16_t index,
                        struct rte_2tuple_filter *filter, uint16_t *rx_queue);
-static int eth_igb_add_flex_filter(struct rte_eth_dev *dev,
-                       uint16_t index,
-                       struct rte_flex_filter *filter, uint16_t rx_queue);
-static int eth_igb_remove_flex_filter(struct rte_eth_dev *dev,
-                       uint16_t index);
-static int eth_igb_get_flex_filter(struct rte_eth_dev *dev,
-                       uint16_t index,
-                       struct rte_flex_filter *filter, uint16_t *rx_queue);
+static int eth_igb_flex_filter_set(struct rte_eth_dev *dev,
+                       struct rte_eth_flex_filter *filter,
+                       bool add);
+static int eth_igb_flex_filter_get(struct rte_eth_dev *dev,
+                       struct rte_eth_flex_filter *filter);
+static int eth_igb_flex_filter_handle(struct rte_eth_dev *dev,
+                       enum rte_filter_op filter_op,
+                       void *arg);
 static int eth_igb_add_5tuple_filter(struct rte_eth_dev *dev,
                        uint16_t index,
                        struct rte_5tuple_filter *filter, uint16_t rx_queue);
@@ -271,9 +271,6 @@ static struct eth_dev_ops eth_igb_ops = {
        .add_2tuple_filter       = eth_igb_add_2tuple_filter,
        .remove_2tuple_filter    = eth_igb_remove_2tuple_filter,
        .get_2tuple_filter       = eth_igb_get_2tuple_filter,
-       .add_flex_filter         = eth_igb_add_flex_filter,
-       .remove_flex_filter      = eth_igb_remove_flex_filter,
-       .get_flex_filter         = eth_igb_get_flex_filter,
        .add_5tuple_filter       = eth_igb_add_5tuple_filter,
        .remove_5tuple_filter    = eth_igb_remove_5tuple_filter,
        .get_5tuple_filter       = eth_igb_get_5tuple_filter,
@@ -470,6 +467,8 @@ eth_igb_dev_init(__attribute__((unused)) struct eth_driver 
*eth_drv,
                E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
        struct e1000_vfta * shadow_vfta =
                        E1000_DEV_PRIVATE_TO_VFTA(eth_dev->data->dev_private);
+       struct e1000_filter_info *filter_info =
+               E1000_DEV_PRIVATE_TO_FILTER_INFO(eth_dev->data->dev_private);
        uint32_t ctrl_ext;

        pci_dev = eth_dev->pci_dev;
@@ -601,6 +600,9 @@ eth_igb_dev_init(__attribute__((unused)) struct eth_driver 
*eth_drv,
        /* enable support intr */
        igb_intr_enable(eth_dev);

+       TAILQ_INIT(&filter_info->flex_list);
+       filter_info->flex_mask = 0;
+
        return 0;

 err_late:
@@ -926,7 +928,10 @@ static void
 eth_igb_stop(struct rte_eth_dev *dev)
 {
        struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       struct e1000_filter_info *filter_info =
+               E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
        struct rte_eth_link link;
+       struct e1000_flex_filter *p_flex;

        igb_intr_disable(hw);
        igb_pf_reset_hw(hw);
@@ -949,6 +954,13 @@ eth_igb_stop(struct rte_eth_dev *dev)
        /* clear the recorded link status */
        memset(&link, 0, sizeof(link));
        rte_igb_dev_atomic_write_link_status(dev, &link);
+
+       /* Remove all flex filters of the device */
+       while ((p_flex = TAILQ_FIRST(&filter_info->flex_list))) {
+               TAILQ_REMOVE(&filter_info->flex_list, p_flex, entries);
+               rte_free(p_flex);
+       }
+       filter_info->flex_mask = 0;
 }

 static void
@@ -2652,161 +2664,229 @@ eth_igb_get_2tuple_filter(struct rte_eth_dev *dev, 
uint16_t index,
        return -ENOENT;
 }

-/*
- * add a flex filter
- *
- * @param
- * dev: Pointer to struct rte_eth_dev.
- * index: the index the filter allocates.
- * filter: ponter to the filter that will be added.
- * rx_queue: the queue id the filter assigned to.
- *
- * @return
- *    - On success, zero.
- *     - On failure, a negative value.
+/* add/del/get a flex filter
  */
+static inline struct e1000_flex_filter *
+eth_igb_flex_filter_lookup(struct e1000_flex_filter_list *filter_list,
+                       struct e1000_flex_filter_info *key)
+{
+       struct e1000_flex_filter *it;
+
+       TAILQ_FOREACH(it, filter_list, entries) {
+               if (memcmp(key, &it->filter_info,
+                       sizeof(struct e1000_flex_filter_info)) == 0)
+                       return it;
+       }
+
+       return NULL;
+}
+
 static int
-eth_igb_add_flex_filter(struct rte_eth_dev *dev, uint16_t index,
-                       struct rte_flex_filter *filter, uint16_t rx_queue)
+eth_igb_flex_filter_set(struct rte_eth_dev *dev,
+                       struct rte_eth_flex_filter *filter,
+                       bool add)
 {
        struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       struct e1000_filter_info *filter_info =
+               E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+       struct e1000_flex_filter *flex_filter, *it;
        uint32_t wufc, en_bits = 0;
        uint32_t queueing = 0;
        uint32_t reg_off = 0;
        uint8_t i, j = 0;

-       MAC_TYPE_FILTER_SUP_EXT(hw->mac.type);
-
-       if (index >= E1000_MAX_FLEXIBLE_FILTERS)
-               return -EINVAL;  /* filter index is out of range. */
+       flex_filter = rte_zmalloc("e1000_flex_filter",
+                       sizeof(struct e1000_flex_filter), 0);
+       if (flex_filter == NULL)
+               return -ENOMEM;

-       if (filter->len == 0 || filter->len > E1000_MAX_FLEX_FILTER_LEN ||
-               filter->len % 8 != 0 ||
-               filter->priority > E1000_MAX_FLEX_FILTER_PRI)
-               return -EINVAL;
+       flex_filter->filter_info.len = filter->len;
+       flex_filter->filter_info.priority = filter->priority;
+       memcpy(flex_filter->filter_info.dwords, filter->bytes, filter->len);
+       memcpy(flex_filter->filter_info.mask, filter->mask,
+                       RTE_ALIGN(filter->len, sizeof(char)) / sizeof(char));

        wufc = E1000_READ_REG(hw, E1000_WUFC);
-       en_bits = E1000_WUFC_FLEX_HQ | (E1000_WUFC_FLX0 << index);
-       if ((wufc & en_bits) == en_bits)
-               return -EINVAL;  /* the filter is in use. */
+       if (flex_filter->index < E1000_MAX_FHFT)
+               reg_off = E1000_FHFT(flex_filter->index);
+       else
+               reg_off = E1000_FHFT_EXT(flex_filter->index - E1000_MAX_FHFT);

-       E1000_WRITE_REG(hw, E1000_WUFC,
-               wufc | E1000_WUFC_FLEX_HQ | (E1000_WUFC_FLX0 << index));
+       if (add) {
+               if (filter->len == 0 || filter->len > E1000_MAX_FLEX_FILTER_LEN
+                       || filter->len % 8 != 0 ||
+                       filter->priority > E1000_MAX_FLEX_FILTER_PRI)
+                       return -EINVAL;
+
+               if (eth_igb_flex_filter_lookup(&filter_info->flex_list,
+                               &flex_filter->filter_info) != NULL) {
+                       PMD_DRV_LOG(ERR, "filter exists.");
+                       rte_free(flex_filter);
+                       return -EEXIST;
+               }

-       j = 0;
-       if (index < E1000_MAX_FHFT)
-               reg_off = E1000_FHFT(index);
-       else
-               reg_off = E1000_FHFT_EXT(index - E1000_MAX_FHFT);
-
-       for (i = 0; i < 16; i++) {
-               E1000_WRITE_REG(hw, reg_off + i*4*4, filter->dwords[j]);
-               E1000_WRITE_REG(hw, reg_off + (i*4+1)*4, filter->dwords[++j]);
-               E1000_WRITE_REG(hw, reg_off + (i*4+2)*4,
-                               (uint32_t)filter->mask[i]);
-               ++j;
-       }
-       queueing |= filter->len |
-               (rx_queue << E1000_FHFT_QUEUEING_QUEUE_SHIFT) |
-               (filter->priority << E1000_FHFT_QUEUEING_PRIO_SHIFT);
-       E1000_WRITE_REG(hw, reg_off + E1000_FHFT_QUEUEING_OFFSET, queueing);
-       return 0;
-}
+               flex_filter->queue = filter->queue;

-/*
- * remove a flex filter
- *
- * @param
- * dev: Pointer to struct rte_eth_dev.
- * index: the index the filter allocates.
- *
- * @return
- *    - On success, zero.
- *    - On failure, a negative value.
- */
-static int
-eth_igb_remove_flex_filter(struct rte_eth_dev *dev,
-                               uint16_t index)
-{
-       struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-       uint32_t wufc, reg_off = 0;
-       uint8_t i;
+               /*
+                * look for an unused flex filter index
+                * and insert the filter into the list.
+                */
+               for (i = 0; i < E1000_MAX_FLEXIBLE_FILTERS; i++) {
+                       if (!(filter_info->flex_mask & (1 << i))) {
+                               filter_info->flex_mask |= 1 << i;
+                               flex_filter->index = i;
+                               TAILQ_INSERT_TAIL(&filter_info->flex_list,
+                                       flex_filter,
+                                       entries);
+                               break;
+                       }
+               }
+               if (i >= E1000_MAX_FLEXIBLE_FILTERS) {
+                       PMD_DRV_LOG(ERR, "flex filters are full.");
+                       rte_free(flex_filter);
+                       return -ENOSYS;
+               }

-       MAC_TYPE_FILTER_SUP_EXT(hw->mac.type);
+               en_bits = E1000_WUFC_FLEX_HQ |
+                               (E1000_WUFC_FLX0 << flex_filter->index);
+               if ((wufc & en_bits) == en_bits)
+                       return -EINVAL;  /* the filter is in use. */

-       if (index >= E1000_MAX_FLEXIBLE_FILTERS)
-               return -EINVAL;  /* filter index is out of range. */
+               E1000_WRITE_REG(hw, E1000_WUFC, wufc | E1000_WUFC_FLEX_HQ |
+                               (E1000_WUFC_FLX0 << flex_filter->index));

-       wufc = E1000_READ_REG(hw, E1000_WUFC);
-       E1000_WRITE_REG(hw, E1000_WUFC, wufc & (~(E1000_WUFC_FLX0 << index)));
+               j = 0;

-       if (index < E1000_MAX_FHFT)
-               reg_off = E1000_FHFT(index);
-       else
-               reg_off = E1000_FHFT_EXT(index - E1000_MAX_FHFT);

-       for (i = 0; i < 64; i++)
-               E1000_WRITE_REG(hw, reg_off + i*4, 0);
+               for (i = 0; i < 16; i++) {
+                       E1000_WRITE_REG(hw, reg_off + i*4*4,
+                                       flex_filter->filter_info.dwords[j]);
+                       E1000_WRITE_REG(hw, reg_off + (i*4+1)*4,
+                                       flex_filter->filter_info.dwords[++j]);
+                       E1000_WRITE_REG(hw, reg_off + (i*4+2)*4,
+                                       (uint32_t)filter->mask[i]);
+                       ++j;
+               }
+               queueing |= filter->len |
+                       (filter->queue << E1000_FHFT_QUEUEING_QUEUE_SHIFT) |
+                       (filter->priority << E1000_FHFT_QUEUEING_PRIO_SHIFT);
+               E1000_WRITE_REG(hw, reg_off + E1000_FHFT_QUEUEING_OFFSET,
+                               queueing);
+       } else {
+               it = eth_igb_flex_filter_lookup(&filter_info->flex_list,
+                               &flex_filter->filter_info);
+               if (it == NULL) {
+                       PMD_DRV_LOG(ERR, "filter doesn't exist.");
+                       rte_free(flex_filter);
+                       return -ENOENT;
+               }
+
+               E1000_WRITE_REG(hw, E1000_WUFC, wufc &
+                       (~(E1000_WUFC_FLX0 << it->index)));
+
+               for (i = 0; i < 64; i++)
+                       E1000_WRITE_REG(hw, reg_off + i*4, 0);
+
+               filter_info->flex_mask &= ~(1 << it->index);
+               TAILQ_REMOVE(&filter_info->flex_list, it, entries);
+               rte_free(it);
+               rte_free(flex_filter);
+       }
+
        return 0;
 }

-/*
- * get a flex filter
- *
- * @param
- * dev: Pointer to struct rte_eth_dev.
- * index: the index the filter allocates.
- * filter: ponter to the filter that returns.
- * *rx_queue: the pointer of the queue id the filter assigned to.
- *
- * @return
- *    - On success, zero.
- *    - On failure, a negative value.
- */
 static int
-eth_igb_get_flex_filter(struct rte_eth_dev *dev, uint16_t index,
-                       struct rte_flex_filter *filter, uint16_t *rx_queue)
+eth_igb_flex_filter_get(struct rte_eth_dev *dev,
+                       struct rte_eth_flex_filter *filter)
 {
        struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       struct e1000_filter_info *filter_info =
+               E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+       struct e1000_flex_filter flex_filter, *it;
        uint32_t wufc, queueing, wufc_en = 0;
-       uint8_t i, j;
-
-       MAC_TYPE_FILTER_SUP_EXT(hw->mac.type);

-       if (index >= E1000_MAX_FLEXIBLE_FILTERS)
-               return -EINVAL;  /* filter index is out of range. */
+       memset(&flex_filter, 0, sizeof(struct e1000_flex_filter));
+       flex_filter.filter_info.len = filter->len;
+       flex_filter.filter_info.priority = filter->priority;
+       memcpy(flex_filter.filter_info.dwords, filter->bytes, filter->len);
+       memcpy(flex_filter.filter_info.mask, filter->mask,
+                       RTE_ALIGN(filter->len, sizeof(char)) / sizeof(char));
+
+       it = eth_igb_flex_filter_lookup(&filter_info->flex_list,
+                       &flex_filter.filter_info);
+       if (it == NULL) {
+               PMD_DRV_LOG(ERR, "filter doesn't exist.");
+               return -ENOENT;
+       }

        wufc = E1000_READ_REG(hw, E1000_WUFC);
-       wufc_en = E1000_WUFC_FLEX_HQ | (E1000_WUFC_FLX0 << index);
+       wufc_en = E1000_WUFC_FLEX_HQ | (E1000_WUFC_FLX0 << it->index);

        if ((wufc & wufc_en) == wufc_en) {
                uint32_t reg_off = 0;
-               j = 0;
-               if (index < E1000_MAX_FHFT)
-                       reg_off = E1000_FHFT(index);
+               if (it->index < E1000_MAX_FHFT)
+                       reg_off = E1000_FHFT(it->index);
                else
-                       reg_off = E1000_FHFT_EXT(index - E1000_MAX_FHFT);
-
-               for (i = 0; i < 16; i++, j = i * 2) {
-                       filter->dwords[j] =
-                               E1000_READ_REG(hw, reg_off + i*4*4);
-                       filter->dwords[j+1] =
-                               E1000_READ_REG(hw, reg_off + (i*4+1)*4);
-                       filter->mask[i] =
-                               E1000_READ_REG(hw, reg_off + (i*4+2)*4);
-               }
+                       reg_off = E1000_FHFT_EXT(it->index - E1000_MAX_FHFT);
+
                queueing = E1000_READ_REG(hw,
                                reg_off + E1000_FHFT_QUEUEING_OFFSET);
-               filter->len = queueing & E1000_FHFT_QUEUEING_LEN;
-               filter->priority = (queueing & E1000_FHFT_QUEUEING_PRIO) >>
-                       E1000_FHFT_QUEUEING_PRIO_SHIFT;
-               *rx_queue = (queueing & E1000_FHFT_QUEUEING_QUEUE) >>
+               filter->queue = (queueing & E1000_FHFT_QUEUEING_QUEUE) >>
                        E1000_FHFT_QUEUEING_QUEUE_SHIFT;
                return 0;
        }
        return -ENOENT;
 }

+static int
+eth_igb_flex_filter_handle(struct rte_eth_dev *dev,
+                       enum rte_filter_op filter_op,
+                       void *arg)
+{
+       struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       int ret = 0;
+
+       MAC_TYPE_FILTER_SUP(hw->mac.type);
+
+       if (filter_op == RTE_ETH_FILTER_NOP)
+               return ret;
+
+       if (arg == NULL) {
+               PMD_DRV_LOG(ERR, "arg shouldn't be NULL for operation %u",
+                           filter_op);
+               return -EINVAL;
+       }
+
+       if (((struct rte_eth_flex_filter *)arg)->len == 0) {
+               PMD_DRV_LOG(ERR, "filter length shouldn't be 0");
+               return -EINVAL;
+       }
+
+       switch (filter_op) {
+       case RTE_ETH_FILTER_ADD:
+               ret = eth_igb_flex_filter_set(dev,
+                               (struct rte_eth_flex_filter *)arg,
+                               TRUE);
+               break;
+       case RTE_ETH_FILTER_DELETE:
+               ret = eth_igb_flex_filter_set(dev,
+                               (struct rte_eth_flex_filter *)arg,
+                               FALSE);
+               break;
+       case RTE_ETH_FILTER_GET:
+               ret = eth_igb_flex_filter_get(dev,
+                               (struct rte_eth_flex_filter *)arg);
+               break;
+       default:
+               PMD_DRV_LOG(ERR, "unsupported operation %u\n", filter_op);
+               ret = -ENOSYS;
+               break;
+       }
+
+       return ret;
+}
+
 /*
  * add a 5tuple filter
  *
@@ -3237,6 +3317,9 @@ eth_igb_filter_ctrl(struct rte_eth_dev *dev,
        case RTE_ETH_FILTER_ETHERTYPE:
                ret = igb_ethertype_filter_handle(dev, filter_op, arg);
                break;
+       case RTE_ETH_FILTER_FLEXIBLE:
+               ret = eth_igb_flex_filter_handle(dev, filter_op, arg);
+               break;
        default:
                PMD_DRV_LOG(WARNING, "Filter type (%d) not supported",
                                                        filter_type);
-- 
1.9.3

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