diff options
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_82599.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_82599.c | 925 |
1 files changed, 925 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c index 3f36d834ccf..5c2627b68c2 100644 --- a/drivers/net/ixgbe/ixgbe_82599.c +++ b/drivers/net/ixgbe/ixgbe_82599.c @@ -1165,6 +1165,931 @@ s32 ixgbe_init_uta_tables_82599(struct ixgbe_hw *hw) } /** + * ixgbe_reinit_fdir_tables_82599 - Reinitialize Flow Director tables. + * @hw: pointer to hardware structure + **/ +s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw) +{ + int i; + u32 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL); + fdirctrl &= ~IXGBE_FDIRCTRL_INIT_DONE; + + /* + * Before starting reinitialization process, + * FDIRCMD.CMD must be zero. + */ + for (i = 0; i < IXGBE_FDIRCMD_CMD_POLL; i++) { + if (!(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) & + IXGBE_FDIRCMD_CMD_MASK)) + break; + udelay(10); + } + if (i >= IXGBE_FDIRCMD_CMD_POLL) { + hw_dbg(hw ,"Flow Director previous command isn't complete, " + "aborting table re-initialization. \n"); + return IXGBE_ERR_FDIR_REINIT_FAILED; + } + + IXGBE_WRITE_REG(hw, IXGBE_FDIRFREE, 0); + IXGBE_WRITE_FLUSH(hw); + /* + * 82599 adapters flow director init flow cannot be restarted, + * Workaround 82599 silicon errata by performing the following steps + * before re-writing the FDIRCTRL control register with the same value. + * - write 1 to bit 8 of FDIRCMD register & + * - write 0 to bit 8 of FDIRCMD register + */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, + (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) | + IXGBE_FDIRCMD_CLEARHT)); + IXGBE_WRITE_FLUSH(hw); + IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, + (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) & + ~IXGBE_FDIRCMD_CLEARHT)); + IXGBE_WRITE_FLUSH(hw); + /* + * Clear FDIR Hash register to clear any leftover hashes + * waiting to be programmed. + */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, 0x00); + IXGBE_WRITE_FLUSH(hw); + + IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl); + IXGBE_WRITE_FLUSH(hw); + + /* Poll init-done after we write FDIRCTRL register */ + for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) { + if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) & + IXGBE_FDIRCTRL_INIT_DONE) + break; + udelay(10); + } + if (i >= IXGBE_FDIR_INIT_DONE_POLL) { + hw_dbg(hw, "Flow Director Signature poll time exceeded!\n"); + return IXGBE_ERR_FDIR_REINIT_FAILED; + } + + /* Clear FDIR statistics registers (read to clear) */ + IXGBE_READ_REG(hw, IXGBE_FDIRUSTAT); + IXGBE_READ_REG(hw, IXGBE_FDIRFSTAT); + IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); + IXGBE_READ_REG(hw, IXGBE_FDIRMISS); + IXGBE_READ_REG(hw, IXGBE_FDIRLEN); + + return 0; +} + +/** + * ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters + * @hw: pointer to hardware structure + * @pballoc: which mode to allocate filters with + **/ +s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc) +{ + u32 fdirctrl = 0; + u32 pbsize; + int i; + + /* + * Before enabling Flow Director, the Rx Packet Buffer size + * must be reduced. The new value is the current size minus + * flow director memory usage size. + */ + pbsize = (1 << (IXGBE_FDIR_PBALLOC_SIZE_SHIFT + pballoc)); + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), + (IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(0)) - pbsize)); + + /* + * The defaults in the HW for RX PB 1-7 are not zero and so should be + * intialized to zero for non DCB mode otherwise actual total RX PB + * would be bigger than programmed and filter space would run into + * the PB 0 region. + */ + for (i = 1; i < 8; i++) + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); + + /* Send interrupt when 64 filters are left */ + fdirctrl |= 4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT; + + /* Set the maximum length per hash bucket to 0xA filters */ + fdirctrl |= 0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT; + + switch (pballoc) { + case IXGBE_FDIR_PBALLOC_64K: + /* 8k - 1 signature filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_64K; + break; + case IXGBE_FDIR_PBALLOC_128K: + /* 16k - 1 signature filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_128K; + break; + case IXGBE_FDIR_PBALLOC_256K: + /* 32k - 1 signature filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_256K; + break; + default: + /* bad value */ + return IXGBE_ERR_CONFIG; + }; + + /* Move the flexible bytes to use the ethertype - shift 6 words */ + fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT); + + fdirctrl |= IXGBE_FDIRCTRL_REPORT_STATUS; + + /* Prime the keys for hashing */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, + htonl(IXGBE_ATR_BUCKET_HASH_KEY)); + IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, + htonl(IXGBE_ATR_SIGNATURE_HASH_KEY)); + + /* + * Poll init-done after we write the register. Estimated times: + * 10G: PBALLOC = 11b, timing is 60us + * 1G: PBALLOC = 11b, timing is 600us + * 100M: PBALLOC = 11b, timing is 6ms + * + * Multiple these timings by 4 if under full Rx load + * + * So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for + * 1 msec per poll time. If we're at line rate and drop to 100M, then + * this might not finish in our poll time, but we can live with that + * for now. + */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl); + IXGBE_WRITE_FLUSH(hw); + for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) { + if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) & + IXGBE_FDIRCTRL_INIT_DONE) + break; + msleep(1); + } + if (i >= IXGBE_FDIR_INIT_DONE_POLL) + hw_dbg(hw, "Flow Director Signature poll time exceeded!\n"); + + return 0; +} + +/** + * ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters + * @hw: pointer to hardware structure + * @pballoc: which mode to allocate filters with + **/ +s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc) +{ + u32 fdirctrl = 0; + u32 pbsize; + int i; + + /* + * Before enabling Flow Director, the Rx Packet Buffer size + * must be reduced. The new value is the current size minus + * flow director memory usage size. + */ + pbsize = (1 << (IXGBE_FDIR_PBALLOC_SIZE_SHIFT + pballoc)); + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), + (IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(0)) - pbsize)); + + /* + * The defaults in the HW for RX PB 1-7 are not zero and so should be + * intialized to zero for non DCB mode otherwise actual total RX PB + * would be bigger than programmed and filter space would run into + * the PB 0 region. + */ + for (i = 1; i < 8; i++) + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); + + /* Send interrupt when 64 filters are left */ + fdirctrl |= 4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT; + + switch (pballoc) { + case IXGBE_FDIR_PBALLOC_64K: + /* 2k - 1 perfect filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_64K; + break; + case IXGBE_FDIR_PBALLOC_128K: + /* 4k - 1 perfect filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_128K; + break; + case IXGBE_FDIR_PBALLOC_256K: + /* 8k - 1 perfect filters */ + fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_256K; + break; + default: + /* bad value */ + return IXGBE_ERR_CONFIG; + }; + + /* Turn perfect match filtering on */ + fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH; + fdirctrl |= IXGBE_FDIRCTRL_REPORT_STATUS; + + /* Move the flexible bytes to use the ethertype - shift 6 words */ + fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT); + + /* Prime the keys for hashing */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, + htonl(IXGBE_ATR_BUCKET_HASH_KEY)); + IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, + htonl(IXGBE_ATR_SIGNATURE_HASH_KEY)); + + /* + * Poll init-done after we write the register. Estimated times: + * 10G: PBALLOC = 11b, timing is 60us + * 1G: PBALLOC = 11b, timing is 600us + * 100M: PBALLOC = 11b, timing is 6ms + * + * Multiple these timings by 4 if under full Rx load + * + * So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for + * 1 msec per poll time. If we're at line rate and drop to 100M, then + * this might not finish in our poll time, but we can live with that + * for now. + */ + + /* Set the maximum length per hash bucket to 0xA filters */ + fdirctrl |= (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT); + + IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl); + IXGBE_WRITE_FLUSH(hw); + for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) { + if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) & + IXGBE_FDIRCTRL_INIT_DONE) + break; + msleep(1); + } + if (i >= IXGBE_FDIR_INIT_DONE_POLL) + hw_dbg(hw, "Flow Director Perfect poll time exceeded!\n"); + + return 0; +} + + +/** + * ixgbe_atr_compute_hash_82599 - Compute the hashes for SW ATR + * @stream: input bitstream to compute the hash on + * @key: 32-bit hash key + **/ +u16 ixgbe_atr_compute_hash_82599(struct ixgbe_atr_input *atr_input, u32 key) +{ + /* + * The algorithm is as follows: + * Hash[15:0] = Sum { S[n] x K[n+16] }, n = 0...350 + * where Sum {A[n]}, n = 0...n is bitwise XOR of A[0], A[1]...A[n] + * and A[n] x B[n] is bitwise AND between same length strings + * + * K[n] is 16 bits, defined as: + * for n modulo 32 >= 15, K[n] = K[n % 32 : (n % 32) - 15] + * for n modulo 32 < 15, K[n] = + * K[(n % 32:0) | (31:31 - (14 - (n % 32)))] + * + * S[n] is 16 bits, defined as: + * for n >= 15, S[n] = S[n:n - 15] + * for n < 15, S[n] = S[(n:0) | (350:350 - (14 - n))] + * + * To simplify for programming, the algorithm is implemented + * in software this way: + * + * Key[31:0], Stream[335:0] + * + * tmp_key[11 * 32 - 1:0] = 11{Key[31:0] = key concatenated 11 times + * int_key[350:0] = tmp_key[351:1] + * int_stream[365:0] = Stream[14:0] | Stream[335:0] | Stream[335:321] + * + * hash[15:0] = 0; + * for (i = 0; i < 351; i++) { + * if (int_key[i]) + * hash ^= int_stream[(i + 15):i]; + * } + */ + + union { + u64 fill[6]; + u32 key[11]; + u8 key_stream[44]; + } tmp_key; + + u8 *stream = (u8 *)atr_input; + u8 int_key[44]; /* upper-most bit unused */ + u8 hash_str[46]; /* upper-most 2 bits unused */ + u16 hash_result = 0; + int i, j, k, h; + + /* + * Initialize the fill member to prevent warnings + * on some compilers + */ + tmp_key.fill[0] = 0; + + /* First load the temporary key stream */ + for (i = 0; i < 6; i++) { + u64 fillkey = ((u64)key << 32) | key; + tmp_key.fill[i] = fillkey; + } + + /* + * Set the interim key for the hashing. Bit 352 is unused, so we must + * shift and compensate when building the key. + */ + + int_key[0] = tmp_key.key_stream[0] >> 1; + for (i = 1, j = 0; i < 44; i++) { + unsigned int this_key = tmp_key.key_stream[j] << 7; + j++; + int_key[i] = (u8)(this_key | (tmp_key.key_stream[j] >> 1)); + } + + /* + * Set the interim bit string for the hashing. Bits 368 and 367 are + * unused, so shift and compensate when building the string. + */ + hash_str[0] = (stream[40] & 0x7f) >> 1; + for (i = 1, j = 40; i < 46; i++) { + unsigned int this_str = stream[j] << 7; + j++; + if (j > 41) + j = 0; + hash_str[i] = (u8)(this_str | (stream[j] >> 1)); + } + + /* + * Now compute the hash. i is the index into hash_str, j is into our + * key stream, k is counting the number of bits, and h interates within + * each byte. + */ + for (i = 45, j = 43, k = 0; k < 351 && i >= 2 && j >= 0; i--, j--) { + for (h = 0; h < 8 && k < 351; h++, k++) { + if (int_key[j] & (1 << h)) { + /* + * Key bit is set, XOR in the current 16-bit + * string. Example of processing: + * h = 0, + * tmp = (hash_str[i - 2] & 0 << 16) | + * (hash_str[i - 1] & 0xff << 8) | + * (hash_str[i] & 0xff >> 0) + * So tmp = hash_str[15 + k:k], since the + * i + 2 clause rolls off the 16-bit value + * h = 7, + * tmp = (hash_str[i - 2] & 0x7f << 9) | + * (hash_str[i - 1] & 0xff << 1) | + * (hash_str[i] & 0x80 >> 7) + */ + int tmp = (hash_str[i] >> h); + tmp |= (hash_str[i - 1] << (8 - h)); + tmp |= (int)(hash_str[i - 2] & ((1 << h) - 1)) + << (16 - h); + hash_result ^= (u16)tmp; + } + } + } + + return hash_result; +} + +/** + * ixgbe_atr_set_vlan_id_82599 - Sets the VLAN id in the ATR input stream + * @input: input stream to modify + * @vlan: the VLAN id to load + **/ +s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input, u16 vlan) +{ + input->byte_stream[IXGBE_ATR_VLAN_OFFSET + 1] = vlan >> 8; + input->byte_stream[IXGBE_ATR_VLAN_OFFSET] = vlan & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_src_ipv4_82599 - Sets the source IPv4 address + * @input: input stream to modify + * @src_addr: the IP address to load + **/ +s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input, u32 src_addr) +{ + input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 3] = src_addr >> 24; + input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 2] = + (src_addr >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 1] = + (src_addr >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET] = src_addr & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_dst_ipv4_82599 - Sets the destination IPv4 address + * @input: input stream to modify + * @dst_addr: the IP address to load + **/ +s32 ixgbe_atr_set_dst_ipv4_82599(struct ixgbe_atr_input *input, u32 dst_addr) +{ + input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 3] = dst_addr >> 24; + input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 2] = + (dst_addr >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 1] = + (dst_addr >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET] = dst_addr & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_src_ipv6_82599 - Sets the source IPv6 address + * @input: input stream to modify + * @src_addr_1: the first 4 bytes of the IP address to load + * @src_addr_2: the second 4 bytes of the IP address to load + * @src_addr_3: the third 4 bytes of the IP address to load + * @src_addr_4: the fourth 4 bytes of the IP address to load + **/ +s32 ixgbe_atr_set_src_ipv6_82599(struct ixgbe_atr_input *input, + u32 src_addr_1, u32 src_addr_2, + u32 src_addr_3, u32 src_addr_4) +{ + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET] = src_addr_4 & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 1] = + (src_addr_4 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 2] = + (src_addr_4 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 3] = src_addr_4 >> 24; + + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 4] = src_addr_3 & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 5] = + (src_addr_3 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 6] = + (src_addr_3 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 7] = src_addr_3 >> 24; + + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 8] = src_addr_2 & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 9] = + (src_addr_2 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 10] = + (src_addr_2 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 11] = src_addr_2 >> 24; + + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 12] = src_addr_1 & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 13] = + (src_addr_1 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 14] = + (src_addr_1 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 15] = src_addr_1 >> 24; + + return 0; +} + +/** + * ixgbe_atr_set_dst_ipv6_82599 - Sets the destination IPv6 address + * @input: input stream to modify + * @dst_addr_1: the first 4 bytes of the IP address to load + * @dst_addr_2: the second 4 bytes of the IP address to load + * @dst_addr_3: the third 4 bytes of the IP address to load + * @dst_addr_4: the fourth 4 bytes of the IP address to load + **/ +s32 ixgbe_atr_set_dst_ipv6_82599(struct ixgbe_atr_input *input, + u32 dst_addr_1, u32 dst_addr_2, + u32 dst_addr_3, u32 dst_addr_4) +{ + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET] = dst_addr_4 & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 1] = + (dst_addr_4 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 2] = + (dst_addr_4 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 3] = dst_addr_4 >> 24; + + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 4] = dst_addr_3 & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 5] = + (dst_addr_3 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 6] = + (dst_addr_3 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 7] = dst_addr_3 >> 24; + + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 8] = dst_addr_2 & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 9] = + (dst_addr_2 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 10] = + (dst_addr_2 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 11] = dst_addr_2 >> 24; + + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 12] = dst_addr_1 & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 13] = + (dst_addr_1 >> 8) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 14] = + (dst_addr_1 >> 16) & 0xff; + input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 15] = dst_addr_1 >> 24; + + return 0; +} + +/** + * ixgbe_atr_set_src_port_82599 - Sets the source port + * @input: input stream to modify + * @src_port: the source port to load + **/ +s32 ixgbe_atr_set_src_port_82599(struct ixgbe_atr_input *input, u16 src_port) +{ + input->byte_stream[IXGBE_ATR_SRC_PORT_OFFSET + 1] = src_port >> 8; + input->byte_stream[IXGBE_ATR_SRC_PORT_OFFSET] = src_port & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_dst_port_82599 - Sets the destination port + * @input: input stream to modify + * @dst_port: the destination port to load + **/ +s32 ixgbe_atr_set_dst_port_82599(struct ixgbe_atr_input *input, u16 dst_port) +{ + input->byte_stream[IXGBE_ATR_DST_PORT_OFFSET + 1] = dst_port >> 8; + input->byte_stream[IXGBE_ATR_DST_PORT_OFFSET] = dst_port & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_flex_byte_82599 - Sets the flexible bytes + * @input: input stream to modify + * @flex_bytes: the flexible bytes to load + **/ +s32 ixgbe_atr_set_flex_byte_82599(struct ixgbe_atr_input *input, u16 flex_byte) +{ + input->byte_stream[IXGBE_ATR_FLEX_BYTE_OFFSET + 1] = flex_byte >> 8; + input->byte_stream[IXGBE_ATR_FLEX_BYTE_OFFSET] = flex_byte & 0xff; + + return 0; +} + +/** + * ixgbe_atr_set_vm_pool_82599 - Sets the Virtual Machine pool + * @input: input stream to modify + * @vm_pool: the Virtual Machine pool to load + **/ +s32 ixgbe_atr_set_vm_pool_82599(struct ixgbe_atr_input *input, u8 vm_pool) +{ + input->byte_stream[IXGBE_ATR_VM_POOL_OFFSET] = vm_pool; + + return 0; +} + +/** + * ixgbe_atr_set_l4type_82599 - Sets the layer 4 packet type + * @input: input stream to modify + * @l4type: the layer 4 type value to load + **/ +s32 ixgbe_atr_set_l4type_82599(struct ixgbe_atr_input *input, u8 l4type) +{ + input->byte_stream[IXGBE_ATR_L4TYPE_OFFSET] = l4type; + + return 0; +} + +/** + * ixgbe_atr_get_vlan_id_82599 - Gets the VLAN id from the ATR input stream + * @input: input stream to search + * @vlan: the VLAN id to load + **/ +s32 ixgbe_atr_get_vlan_id_82599(struct ixgbe_atr_input *input, u16 *vlan) +{ + *vlan = input->byte_stream[IXGBE_ATR_VLAN_OFFSET]; + *vlan |= input->byte_stream[IXGBE_ATR_VLAN_OFFSET + 1] << 8; + + return 0; +} + +/** + * ixgbe_atr_get_src_ipv4_82599 - Gets the source IPv4 address + * @input: input stream to search + * @src_addr: the IP address to load + **/ +s32 ixgbe_atr_get_src_ipv4_82599(struct ixgbe_atr_input *input, u32 *src_addr) +{ + *src_addr = input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET]; + *src_addr |= input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 1] << 8; + *src_addr |= input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 2] << 16; + *src_addr |= input->byte_stream[IXGBE_ATR_SRC_IPV4_OFFSET + 3] << 24; + + return 0; +} + +/** + * ixgbe_atr_get_dst_ipv4_82599 - Gets the destination IPv4 address + * @input: input stream to search + * @dst_addr: the IP address to load + **/ +s32 ixgbe_atr_get_dst_ipv4_82599(struct ixgbe_atr_input *input, u32 *dst_addr) +{ + *dst_addr = input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET]; + *dst_addr |= input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 1] << 8; + *dst_addr |= input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 2] << 16; + *dst_addr |= input->byte_stream[IXGBE_ATR_DST_IPV4_OFFSET + 3] << 24; + + return 0; +} + +/** + * ixgbe_atr_get_src_ipv6_82599 - Gets the source IPv6 address + * @input: input stream to search + * @src_addr_1: the first 4 bytes of the IP address to load + * @src_addr_2: the second 4 bytes of the IP address to load + * @src_addr_3: the third 4 bytes of the IP address to load + * @src_addr_4: the fourth 4 bytes of the IP address to load + **/ +s32 ixgbe_atr_get_src_ipv6_82599(struct ixgbe_atr_input *input, + u32 *src_addr_1, u32 *src_addr_2, + u32 *src_addr_3, u32 *src_addr_4) +{ + *src_addr_1 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 12]; + *src_addr_1 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 13] << 8; + *src_addr_1 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 14] << 16; + *src_addr_1 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 15] << 24; + + *src_addr_2 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 8]; + *src_addr_2 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 9] << 8; + *src_addr_2 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 10] << 16; + *src_addr_2 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 11] << 24; + + *src_addr_3 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 4]; + *src_addr_3 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 5] << 8; + *src_addr_3 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 6] << 16; + *src_addr_3 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 7] << 24; + + *src_addr_4 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET]; + *src_addr_4 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 1] << 8; + *src_addr_4 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 2] << 16; + *src_addr_4 = input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 3] << 24; + + return 0; +} + +/** + * ixgbe_atr_get_dst_ipv6_82599 - Gets the destination IPv6 address + * @input: input stream to search + * @dst_addr_1: the first 4 bytes of the IP address to load + * @dst_addr_2: the second 4 bytes of the IP address to load + * @dst_addr_3: the third 4 bytes of the IP address to load + * @dst_addr_4: the fourth 4 bytes of the IP address to load + **/ +s32 ixgbe_atr_get_dst_ipv6_82599(struct ixgbe_atr_input *input, + u32 *dst_addr_1, u32 *dst_addr_2, + u32 *dst_addr_3, u32 *dst_addr_4) +{ + *dst_addr_1 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 12]; + *dst_addr_1 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 13] << 8; + *dst_addr_1 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 14] << 16; + *dst_addr_1 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 15] << 24; + + *dst_addr_2 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 8]; + *dst_addr_2 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 9] << 8; + *dst_addr_2 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 10] << 16; + *dst_addr_2 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 11] << 24; + + *dst_addr_3 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 4]; + *dst_addr_3 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 5] << 8; + *dst_addr_3 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 6] << 16; + *dst_addr_3 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 7] << 24; + + *dst_addr_4 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET]; + *dst_addr_4 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 1] << 8; + *dst_addr_4 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 2] << 16; + *dst_addr_4 = input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 3] << 24; + + return 0; +} + +/** + * ixgbe_atr_get_src_port_82599 - Gets the source port + * @input: input stream to modify + * @src_port: the source port to load + * + * Even though the input is given in big-endian, the FDIRPORT registers + * expect the ports to be programmed in little-endian. Hence the need to swap + * endianness when retrieving the data. This can be confusing since the + * internal hash engine expects it to be big-endian. + **/ +s32 ixgbe_atr_get_src_port_82599(struct ixgbe_atr_input *input, u16 *src_port) +{ + *src_port = input->byte_stream[IXGBE_ATR_SRC_PORT_OFFSET] << 8; + *src_port |= input->byte_stream[IXGBE_ATR_SRC_PORT_OFFSET + 1]; + + return 0; +} + +/** + * ixgbe_atr_get_dst_port_82599 - Gets the destination port + * @input: input stream to modify + * @dst_port: the destination port to load + * + * Even though the input is given in big-endian, the FDIRPORT registers + * expect the ports to be programmed in little-endian. Hence the need to swap + * endianness when retrieving the data. This can be confusing since the + * internal hash engine expects it to be big-endian. + **/ +s32 ixgbe_atr_get_dst_port_82599(struct ixgbe_atr_input *input, u16 *dst_port) +{ + *dst_port = input->byte_stream[IXGBE_ATR_DST_PORT_OFFSET] << 8; + *dst_port |= input->byte_stream[IXGBE_ATR_DST_PORT_OFFSET + 1]; + + return 0; +} + +/** + * ixgbe_atr_get_flex_byte_82599 - Gets the flexible bytes + * @input: input stream to modify + * @flex_bytes: the flexible bytes to load + **/ +s32 ixgbe_atr_get_flex_byte_82599(struct ixgbe_atr_input *input, u16 *flex_byte) +{ + *flex_byte = input->byte_stream[IXGBE_ATR_FLEX_BYTE_OFFSET]; + *flex_byte |= input->byte_stream[IXGBE_ATR_FLEX_BYTE_OFFSET + 1] << 8; + + return 0; +} + +/** + * ixgbe_atr_get_vm_pool_82599 - Gets the Virtual Machine pool + * @input: input stream to modify + * @vm_pool: the Virtual Machine pool to load + **/ +s32 ixgbe_atr_get_vm_pool_82599(struct ixgbe_atr_input *input, u8 *vm_pool) +{ + *vm_pool = input->byte_stream[IXGBE_ATR_VM_POOL_OFFSET]; + + return 0; +} + +/** + * ixgbe_atr_get_l4type_82599 - Gets the layer 4 packet type + * @input: input stream to modify + * @l4type: the layer 4 type value to load + **/ +s32 ixgbe_atr_get_l4type_82599(struct ixgbe_atr_input *input, u8 *l4type) +{ + *l4type = input->byte_stream[IXGBE_ATR_L4TYPE_OFFSET]; + + return 0; +} + +/** + * ixgbe_atr_add_signature_filter_82599 - Adds a signature hash filter + * @hw: pointer to hardware structure + * @stream: input bitstream + * @queue: queue index to direct traffic to + **/ +s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw, + struct ixgbe_atr_input *input, + u8 queue) +{ + u64 fdirhashcmd; + u64 fdircmd; + u32 fdirhash; + u16 bucket_hash, sig_hash; + u8 l4type; + + bucket_hash = ixgbe_atr_compute_hash_82599(input, + IXGBE_ATR_BUCKET_HASH_KEY); + + /* bucket_hash is only 15 bits */ + bucket_hash &= IXGBE_ATR_HASH_MASK; + + sig_hash = ixgbe_atr_compute_hash_82599(input, + IXGBE_ATR_SIGNATURE_HASH_KEY); + + /* Get the l4type in order to program FDIRCMD properly */ + /* lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6 */ + ixgbe_atr_get_l4type_82599(input, &l4type); + + /* + * The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits + * is for FDIRCMD. Then do a 64-bit register write from FDIRHASH. + */ + fdirhash = sig_hash << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT | bucket_hash; + + fdircmd = (IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE | + IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN); + + switch (l4type & IXGBE_ATR_L4TYPE_MASK) { + case IXGBE_ATR_L4TYPE_TCP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_TCP; + break; + case IXGBE_ATR_L4TYPE_UDP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_UDP; + break; + case IXGBE_ATR_L4TYPE_SCTP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_SCTP; + break; + default: + hw_dbg(hw, "Error on l4type input\n"); + return IXGBE_ERR_CONFIG; + } + + if (l4type & IXGBE_ATR_L4TYPE_IPV6_MASK) + fdircmd |= IXGBE_FDIRCMD_IPV6; + + fdircmd |= ((u64)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT); + fdirhashcmd = ((fdircmd << 32) | fdirhash); + + IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd); + + return 0; +} + +/** + * ixgbe_fdir_add_perfect_filter_82599 - Adds a perfect filter + * @hw: pointer to hardware structure + * @input: input bitstream + * @queue: queue index to direct traffic to + * + * Note that the caller to this function must lock before calling, since the + * hardware writes must be protected from one another. + **/ +s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw, + struct ixgbe_atr_input *input, + u16 soft_id, + u8 queue) +{ + u32 fdircmd = 0; + u32 fdirhash; + u32 src_ipv4, dst_ipv4; + u32 src_ipv6_1, src_ipv6_2, src_ipv6_3, src_ipv6_4; + u16 src_port, dst_port, vlan_id, flex_bytes; + u16 bucket_hash; + u8 l4type; + + /* Get our input values */ + ixgbe_atr_get_l4type_82599(input, &l4type); + + /* + * Check l4type formatting, and bail out before we touch the hardware + * if there's a configuration issue + */ + switch (l4type & IXGBE_ATR_L4TYPE_MASK) { + case IXGBE_ATR_L4TYPE_TCP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_TCP; + break; + case IXGBE_ATR_L4TYPE_UDP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_UDP; + break; + case IXGBE_ATR_L4TYPE_SCTP: + fdircmd |= IXGBE_FDIRCMD_L4TYPE_SCTP; + break; + default: + hw_dbg(hw, "Error on l4type input\n"); + return IXGBE_ERR_CONFIG; + } + + bucket_hash = ixgbe_atr_compute_hash_82599(input, + IXGBE_ATR_BUCKET_HASH_KEY); + + /* bucket_hash is only 15 bits */ + bucket_hash &= IXGBE_ATR_HASH_MASK; + + ixgbe_atr_get_vlan_id_82599(input, &vlan_id); + ixgbe_atr_get_src_port_82599(input, &src_port); + ixgbe_atr_get_dst_port_82599(input, &dst_port); + ixgbe_atr_get_flex_byte_82599(input, &flex_bytes); + + fdirhash = soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT | bucket_hash; + + /* Now figure out if we're IPv4 or IPv6 */ + if (l4type & IXGBE_ATR_L4TYPE_IPV6_MASK) { + /* IPv6 */ + ixgbe_atr_get_src_ipv6_82599(input, &src_ipv6_1, &src_ipv6_2, + &src_ipv6_3, &src_ipv6_4); + + IXGBE_WRITE_REG(hw, IXGBE_FDIRSIPv6(0), src_ipv6_1); + IXGBE_WRITE_REG(hw, IXGBE_FDIRSIPv6(1), src_ipv6_2); + IXGBE_WRITE_REG(hw, IXGBE_FDIRSIPv6(2), src_ipv6_3); + /* The last 4 bytes is the same register as IPv4 */ + IXGBE_WRITE_REG(hw, IXGBE_FDIRIPSA, src_ipv6_4); + + fdircmd |= IXGBE_FDIRCMD_IPV6; + fdircmd |= IXGBE_FDIRCMD_IPv6DMATCH; + } else { + /* IPv4 */ + ixgbe_atr_get_src_ipv4_82599(input, &src_ipv4); + IXGBE_WRITE_REG(hw, IXGBE_FDIRIPSA, src_ipv4); + + } + + ixgbe_atr_get_dst_ipv4_82599(input, &dst_ipv4); + IXGBE_WRITE_REG(hw, IXGBE_FDIRIPDA, dst_ipv4); + + IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, (vlan_id | + (flex_bytes << IXGBE_FDIRVLAN_FLEX_SHIFT))); + IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, (src_port | + (dst_port << IXGBE_FDIRPORT_DESTINATION_SHIFT))); + + fdircmd |= IXGBE_FDIRCMD_CMD_ADD_FLOW; + fdircmd |= IXGBE_FDIRCMD_FILTER_UPDATE; + fdircmd |= IXGBE_FDIRCMD_LAST; + fdircmd |= IXGBE_FDIRCMD_QUEUE_EN; + fdircmd |= queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT; + + IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash); + IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd); + + return 0; +} +/** * ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register * @hw: pointer to hardware structure * @reg: analog register to read |