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ixgbe: update perfect filter framework to support retaining filters

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This change is meant to update the internal framework of ixgbe so that
perfect filters can be stored and tracked via software.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2011-05-11 07:18:36 +00:00 committed by Jeff Kirsher
parent 03ecf91aae
commit c04f6ca848
4 changed files with 379 additions and 291 deletions
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14
drivers/net/ixgbe/ixgbe.h
View file

@ -543,16 +543,22 @@ extern void ixgbe_alloc_rx_buffers(struct ixgbe_ring *, u16);
extern void ixgbe_write_eitr(struct ixgbe_q_vector *);
extern int ethtool_ioctl(struct ifreq *ifr);
extern s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw);
extern s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc);
extern s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc);
extern s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl);
extern s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl);
extern s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_hash_dword input,
union ixgbe_atr_hash_dword common,
u8 queue);
extern s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
extern s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input_mask);
extern s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
struct ixgbe_atr_input_masks *input_masks,
u16 soft_id, u8 queue);
extern s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
u16 soft_id);
extern void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
union ixgbe_atr_input *mask);
extern void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
struct ixgbe_ring *ring);
extern void ixgbe_clear_rscctl(struct ixgbe_adapter *adapter,

621
drivers/net/ixgbe/ixgbe_82599.c
View file

@ -1107,42 +1107,86 @@ s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw)
}
/**
* ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
* ixgbe_set_fdir_rxpba_82599 - Initialize Flow Director Rx packet buffer
* @hw: pointer to hardware structure
* @pballoc: which mode to allocate filters with
**/
s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc)
static s32 ixgbe_set_fdir_rxpba_82599(struct ixgbe_hw *hw, const u32 pballoc)
{
u32 fdirctrl = 0;
u32 fdir_pbsize = hw->mac.rx_pb_size << IXGBE_RXPBSIZE_SHIFT;
u32 current_rxpbsize = 0;
int i;
/* 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;
/* reserve space for Flow Director filters */
switch (pballoc) {
case IXGBE_FDIR_PBALLOC_64K:
/* 8k - 1 signature filters */
fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_64K;
case IXGBE_FDIR_PBALLOC_256K:
fdir_pbsize -= 256 << IXGBE_RXPBSIZE_SHIFT;
break;
case IXGBE_FDIR_PBALLOC_128K:
/* 16k - 1 signature filters */
fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_128K;
fdir_pbsize -= 128 << IXGBE_RXPBSIZE_SHIFT;
break;
case IXGBE_FDIR_PBALLOC_256K:
/* 32k - 1 signature filters */
fdirctrl |= IXGBE_FDIRCTRL_PBALLOC_256K;
case IXGBE_FDIR_PBALLOC_64K:
fdir_pbsize -= 64 << IXGBE_RXPBSIZE_SHIFT;
break;
case IXGBE_FDIR_PBALLOC_NONE:
default:
/* bad value */
return IXGBE_ERR_CONFIG;
return IXGBE_ERR_PARAM;
}
/* Move the flexible bytes to use the ethertype - shift 6 words */
fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT);
/* determine current RX packet buffer size */
for (i = 0; i < 8; i++)
current_rxpbsize += IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
/* if there is already room for the filters do nothing */
if (current_rxpbsize <= fdir_pbsize)
return 0;
if (current_rxpbsize > hw->mac.rx_pb_size) {
/*
* if rxpbsize is greater than max then HW max the Rx buffer
* sizes are unconfigured or misconfigured since HW default is
* to give the full buffer to each traffic class resulting in
* the total size being buffer size 8x actual size
*
* This assumes no DCB since the RXPBSIZE registers appear to
* be unconfigured.
*/
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), fdir_pbsize);
for (i = 1; i < 8; i++)
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
} else {
/*
* Since the Rx packet buffer appears to have already been
* configured we need to shrink each packet buffer by enough
* to make room for the filters. As such we take each rxpbsize
* value and multiply it by a fraction representing the size
* needed over the size we currently have.
*
* We need to reduce fdir_pbsize and current_rxpbsize to
* 1/1024 of their original values in order to avoid
* overflowing the u32 being used to store rxpbsize.
*/
fdir_pbsize >>= IXGBE_RXPBSIZE_SHIFT;
current_rxpbsize >>= IXGBE_RXPBSIZE_SHIFT;
for (i = 0; i < 8; i++) {
u32 rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
rxpbsize *= fdir_pbsize;
rxpbsize /= current_rxpbsize;
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
}
}
return 0;
}
/**
* ixgbe_fdir_enable_82599 - Initialize Flow Director control registers
* @hw: pointer to hardware structure
* @fdirctrl: value to write to flow director control register
**/
static void ixgbe_fdir_enable_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
int i;
/* Prime the keys for hashing */
IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, IXGBE_ATR_BUCKET_HASH_KEY);
@ -1169,8 +1213,38 @@ s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc)
break;
usleep_range(1000, 2000);
}
if (i >= IXGBE_FDIR_INIT_DONE_POLL)
hw_dbg(hw, "Flow Director Signature poll time exceeded!\n");
hw_dbg(hw, "Flow Director poll time exceeded!\n");
}
/**
* ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
* @hw: pointer to hardware structure
* @fdirctrl: value to write to flow director control register, initially
* contains just the value of the Rx packet buffer allocation
**/
s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
s32 err;
/* Before enabling Flow Director, verify the Rx Packet Buffer size */
err = ixgbe_set_fdir_rxpba_82599(hw, fdirctrl);
if (err)
return err;
/*
* Continue setup of fdirctrl register bits:
* Move the flexible bytes to use the ethertype - shift 6 words
* Set the maximum length per hash bucket to 0xA filters
* Send interrupt when 64 filters are left
*/
fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
(0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
(4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
/* write hashes and fdirctrl register, poll for completion */
ixgbe_fdir_enable_82599(hw, fdirctrl);
return 0;
}
@ -1178,170 +1252,40 @@ s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc)
/**
* ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters
* @hw: pointer to hardware structure
* @pballoc: which mode to allocate filters with
* @fdirctrl: value to write to flow director control register, initially
* contains just the value of the Rx packet buffer allocation
**/
s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc)
s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
u32 fdirctrl = 0;
int i;
s32 err;
/* Send interrupt when 64 filters are left */
fdirctrl |= 4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT;
/* Initialize the drop queue to Rx queue 127 */
fdirctrl |= (127 << IXGBE_FDIRCTRL_DROP_Q_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, IXGBE_ATR_BUCKET_HASH_KEY);
IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, IXGBE_ATR_SIGNATURE_HASH_KEY);
/* Before enabling Flow Director, verify the Rx Packet Buffer size */
err = ixgbe_set_fdir_rxpba_82599(hw, fdirctrl);
if (err)
return err;
/*
* 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.
* Continue setup of fdirctrl register bits:
* Turn perfect match filtering on
* Report hash in RSS field of Rx wb descriptor
* Initialize the drop queue
* Move the flexible bytes to use the ethertype - shift 6 words
* Set the maximum length per hash bucket to 0xA filters
* Send interrupt when 64 (0x4 * 16) filters are left
*/
fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
IXGBE_FDIRCTRL_REPORT_STATUS |
(IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
(0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
(0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
(4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
/* 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;
usleep_range(1000, 2000);
}
if (i >= IXGBE_FDIR_INIT_DONE_POLL)
hw_dbg(hw, "Flow Director Perfect poll time exceeded!\n");
/* write hashes and fdirctrl register, poll for completion */
ixgbe_fdir_enable_82599(hw, fdirctrl);
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
**/
static u32 ixgbe_atr_compute_hash_82599(union 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], hi_hash_dword[31:0], lo_hash_dword[31:0], hash[15:0]
*
* for (i = 0; i < 352; i+=32)
* hi_hash_dword[31:0] ^= Stream[(i+31):i];
*
* lo_hash_dword[15:0] ^= Stream[15:0];
* lo_hash_dword[15:0] ^= hi_hash_dword[31:16];
* lo_hash_dword[31:16] ^= hi_hash_dword[15:0];
*
* hi_hash_dword[31:0] ^= Stream[351:320];
*
* if(key[0])
* hash[15:0] ^= Stream[15:0];
*
* for (i = 0; i < 16; i++) {
* if (key[i])
* hash[15:0] ^= lo_hash_dword[(i+15):i];
* if (key[i + 16])
* hash[15:0] ^= hi_hash_dword[(i+15):i];
* }
*
*/
__be32 common_hash_dword = 0;
u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
u32 hash_result = 0;
u8 i;
/* record the flow_vm_vlan bits as they are a key part to the hash */
flow_vm_vlan = ntohl(atr_input->dword_stream[0]);
/* generate common hash dword */
for (i = 10; i; i -= 2)
common_hash_dword ^= atr_input->dword_stream[i] ^
atr_input->dword_stream[i - 1];
hi_hash_dword = ntohl(common_hash_dword);
/* low dword is word swapped version of common */
lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
/* apply flow ID/VM pool/VLAN ID bits to hash words */
hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
/* Process bits 0 and 16 */
if (key & 0x0001) hash_result ^= lo_hash_dword;
if (key & 0x00010000) hash_result ^= hi_hash_dword;
/*
* apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
* delay this because bit 0 of the stream should not be processed
* so we do not add the vlan until after bit 0 was processed
*/
lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
/* process the remaining 30 bits in the key 2 bits at a time */
for (i = 15; i; i-- ) {
if (key & (0x0001 << i)) hash_result ^= lo_hash_dword >> i;
if (key & (0x00010000 << i)) hash_result ^= hi_hash_dword >> i;
}
return hash_result & IXGBE_ATR_HASH_MASK;
}
/*
* These defines allow us to quickly generate all of the necessary instructions
* in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
@ -1476,7 +1420,6 @@ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
*/
fdirhashcmd = (u64)fdircmd << 32;
fdirhashcmd |= ixgbe_atr_compute_sig_hash_82599(input, common);
IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd);
hw_dbg(hw, "Tx Queue=%x hash=%x\n", queue, (u32)fdirhashcmd);
@ -1484,6 +1427,101 @@ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
return 0;
}
#define IXGBE_COMPUTE_BKT_HASH_ITERATION(_n) \
do { \
u32 n = (_n); \
if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << n)) \
bucket_hash ^= lo_hash_dword >> n; \
if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << (n + 16))) \
bucket_hash ^= hi_hash_dword >> n; \
} while (0);
/**
* ixgbe_atr_compute_perfect_hash_82599 - Compute the perfect filter hash
* @atr_input: input bitstream to compute the hash on
* @input_mask: mask for the input bitstream
*
* This function serves two main purposes. First it applys the input_mask
* to the atr_input resulting in a cleaned up atr_input data stream.
* Secondly it computes the hash and stores it in the bkt_hash field at
* the end of the input byte stream. This way it will be available for
* future use without needing to recompute the hash.
**/
void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
union ixgbe_atr_input *input_mask)
{
u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
u32 bucket_hash = 0;
/* Apply masks to input data */
input->dword_stream[0] &= input_mask->dword_stream[0];
input->dword_stream[1] &= input_mask->dword_stream[1];
input->dword_stream[2] &= input_mask->dword_stream[2];
input->dword_stream[3] &= input_mask->dword_stream[3];
input->dword_stream[4] &= input_mask->dword_stream[4];
input->dword_stream[5] &= input_mask->dword_stream[5];
input->dword_stream[6] &= input_mask->dword_stream[6];
input->dword_stream[7] &= input_mask->dword_stream[7];
input->dword_stream[8] &= input_mask->dword_stream[8];
input->dword_stream[9] &= input_mask->dword_stream[9];
input->dword_stream[10] &= input_mask->dword_stream[10];
/* record the flow_vm_vlan bits as they are a key part to the hash */
flow_vm_vlan = ntohl(input->dword_stream[0]);
/* generate common hash dword */
hi_hash_dword = ntohl(input->dword_stream[1] ^
input->dword_stream[2] ^
input->dword_stream[3] ^
input->dword_stream[4] ^
input->dword_stream[5] ^
input->dword_stream[6] ^
input->dword_stream[7] ^
input->dword_stream[8] ^
input->dword_stream[9] ^
input->dword_stream[10]);
/* low dword is word swapped version of common */
lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
/* apply flow ID/VM pool/VLAN ID bits to hash words */
hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
/* Process bits 0 and 16 */
IXGBE_COMPUTE_BKT_HASH_ITERATION(0);
/*
* apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
* delay this because bit 0 of the stream should not be processed
* so we do not add the vlan until after bit 0 was processed
*/
lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
/* Process remaining 30 bit of the key */
IXGBE_COMPUTE_BKT_HASH_ITERATION(1);
IXGBE_COMPUTE_BKT_HASH_ITERATION(2);
IXGBE_COMPUTE_BKT_HASH_ITERATION(3);
IXGBE_COMPUTE_BKT_HASH_ITERATION(4);
IXGBE_COMPUTE_BKT_HASH_ITERATION(5);
IXGBE_COMPUTE_BKT_HASH_ITERATION(6);
IXGBE_COMPUTE_BKT_HASH_ITERATION(7);
IXGBE_COMPUTE_BKT_HASH_ITERATION(8);
IXGBE_COMPUTE_BKT_HASH_ITERATION(9);
IXGBE_COMPUTE_BKT_HASH_ITERATION(10);
IXGBE_COMPUTE_BKT_HASH_ITERATION(11);
IXGBE_COMPUTE_BKT_HASH_ITERATION(12);
IXGBE_COMPUTE_BKT_HASH_ITERATION(13);
IXGBE_COMPUTE_BKT_HASH_ITERATION(14);
IXGBE_COMPUTE_BKT_HASH_ITERATION(15);
/*
* Limit hash to 13 bits since max bucket count is 8K.
* Store result at the end of the input stream.
*/
input->formatted.bkt_hash = bucket_hash & 0x1FFF;
}
/**
* ixgbe_get_fdirtcpm_82599 - generate a tcp port from atr_input_masks
* @input_mask: mask to be bit swapped
@ -1493,11 +1531,11 @@ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
* generate a correctly swapped value we need to bit swap the mask and that
* is what is accomplished by this function.
**/
static u32 ixgbe_get_fdirtcpm_82599(struct ixgbe_atr_input_masks *input_masks)
static u32 ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input *input_mask)
{
u32 mask = ntohs(input_masks->dst_port_mask);
u32 mask = ntohs(input_mask->formatted.dst_port);
mask <<= IXGBE_FDIRTCPM_DPORTM_SHIFT;
mask |= ntohs(input_masks->src_port_mask);
mask |= ntohs(input_mask->formatted.src_port);
mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1);
mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2);
mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4);
@ -1519,52 +1557,14 @@ static u32 ixgbe_get_fdirtcpm_82599(struct ixgbe_atr_input_masks *input_masks)
IXGBE_WRITE_REG((a), (reg), IXGBE_STORE_AS_BE32(ntohl(value)))
#define IXGBE_STORE_AS_BE16(_value) \
(((u16)(_value) >> 8) | ((u16)(_value) << 8))
ntohs(((u16)(_value) >> 8) | ((u16)(_value) << 8))
/**
* ixgbe_fdir_add_perfect_filter_82599 - Adds a perfect filter
* @hw: pointer to hardware structure
* @input: input bitstream
* @input_masks: bitwise masks for relevant fields
* @soft_id: software index into the silicon hash tables for filter storage
* @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,
union ixgbe_atr_input *input,
struct ixgbe_atr_input_masks *input_masks,
u16 soft_id, u8 queue)
s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input_mask)
{
u32 fdirhash;
u32 fdircmd;
u32 fdirport, fdirtcpm;
u32 fdirvlan;
/* start with VLAN, flex bytes, VM pool, and IPv6 destination masked */
u32 fdirm = IXGBE_FDIRM_VLANID | IXGBE_FDIRM_VLANP | IXGBE_FDIRM_FLEX |
IXGBE_FDIRM_POOL | IXGBE_FDIRM_DIPv6;
/*
* Check flow_type formatting, and bail out before we touch the hardware
* if there's a configuration issue
*/
switch (input->formatted.flow_type) {
case IXGBE_ATR_FLOW_TYPE_IPV4:
/* use the L4 protocol mask for raw IPv4/IPv6 traffic */
fdirm |= IXGBE_FDIRM_L4P;
case IXGBE_ATR_FLOW_TYPE_SCTPV4:
if (input_masks->dst_port_mask || input_masks->src_port_mask) {
hw_dbg(hw, " Error on src/dst port mask\n");
return IXGBE_ERR_CONFIG;
}
case IXGBE_ATR_FLOW_TYPE_TCPV4:
case IXGBE_ATR_FLOW_TYPE_UDPV4:
break;
default:
hw_dbg(hw, " Error on flow type input\n");
return IXGBE_ERR_CONFIG;
}
/* mask IPv6 since it is currently not supported */
u32 fdirm = IXGBE_FDIRM_DIPv6;
u32 fdirtcpm;
/*
* Program the relevant mask registers. If src/dst_port or src/dst_addr
@ -1576,41 +1576,71 @@ s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
* point in time.
*/
/* Program FDIRM */
switch (ntohs(input_masks->vlan_id_mask) & 0xEFFF) {
case 0xEFFF:
/* Unmask VLAN ID - bit 0 and fall through to unmask prio */
fdirm &= ~IXGBE_FDIRM_VLANID;
case 0xE000:
/* Unmask VLAN prio - bit 1 */
fdirm &= ~IXGBE_FDIRM_VLANP;
/* verify bucket hash is cleared on hash generation */
if (input_mask->formatted.bkt_hash)
hw_dbg(hw, " bucket hash should always be 0 in mask\n");
/* Program FDIRM and verify partial masks */
switch (input_mask->formatted.vm_pool & 0x7F) {
case 0x0:
fdirm |= IXGBE_FDIRM_POOL;
case 0x7F:
break;
case 0x0FFF:
/* Unmask VLAN ID - bit 0 */
fdirm &= ~IXGBE_FDIRM_VLANID;
default:
hw_dbg(hw, " Error on vm pool mask\n");
return IXGBE_ERR_CONFIG;
}
switch (input_mask->formatted.flow_type & IXGBE_ATR_L4TYPE_MASK) {
case 0x0:
fdirm |= IXGBE_FDIRM_L4P;
if (input_mask->formatted.dst_port ||
input_mask->formatted.src_port) {
hw_dbg(hw, " Error on src/dst port mask\n");
return IXGBE_ERR_CONFIG;
}
case IXGBE_ATR_L4TYPE_MASK:
break;
default:
hw_dbg(hw, " Error on flow type mask\n");
return IXGBE_ERR_CONFIG;
}
switch (ntohs(input_mask->formatted.vlan_id) & 0xEFFF) {
case 0x0000:
/* do nothing, vlans already masked */
/* mask VLAN ID, fall through to mask VLAN priority */
fdirm |= IXGBE_FDIRM_VLANID;
case 0x0FFF:
/* mask VLAN priority */
fdirm |= IXGBE_FDIRM_VLANP;
break;
case 0xE000:
/* mask VLAN ID only, fall through */
fdirm |= IXGBE_FDIRM_VLANID;
case 0xEFFF:
/* no VLAN fields masked */
break;
default:
hw_dbg(hw, " Error on VLAN mask\n");
return IXGBE_ERR_CONFIG;
}
if (input_masks->flex_mask & 0xFFFF) {
if ((input_masks->flex_mask & 0xFFFF) != 0xFFFF) {
switch (input_mask->formatted.flex_bytes & 0xFFFF) {
case 0x0000:
/* Mask Flex Bytes, fall through */
fdirm |= IXGBE_FDIRM_FLEX;
case 0xFFFF:
break;
default:
hw_dbg(hw, " Error on flexible byte mask\n");
return IXGBE_ERR_CONFIG;
}
/* Unmask Flex Bytes - bit 4 */
fdirm &= ~IXGBE_FDIRM_FLEX;
}
/* Now mask VM pool and destination IPv6 - bits 5 and 2 */
IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
/* store the TCP/UDP port masks, bit reversed from port layout */
fdirtcpm = ixgbe_get_fdirtcpm_82599(input_masks);
fdirtcpm = ixgbe_get_fdirtcpm_82599(input_mask);
/* write both the same so that UDP and TCP use the same mask */
IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, ~fdirtcpm);
@ -1618,24 +1648,32 @@ s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
/* store source and destination IP masks (big-enian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M,
~input_masks->src_ip_mask[0]);
~input_mask->formatted.src_ip[0]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M,
~input_masks->dst_ip_mask[0]);
~input_mask->formatted.dst_ip[0]);
/* Apply masks to input data */
input->formatted.vlan_id &= input_masks->vlan_id_mask;
input->formatted.flex_bytes &= input_masks->flex_mask;
input->formatted.src_port &= input_masks->src_port_mask;
input->formatted.dst_port &= input_masks->dst_port_mask;
input->formatted.src_ip[0] &= input_masks->src_ip_mask[0];
input->formatted.dst_ip[0] &= input_masks->dst_ip_mask[0];
return 0;
}
/* record vlan (little-endian) and flex_bytes(big-endian) */
fdirvlan =
IXGBE_STORE_AS_BE16(ntohs(input->formatted.flex_bytes));
fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
fdirvlan |= ntohs(input->formatted.vlan_id);
IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
u16 soft_id, u8 queue)
{
u32 fdirport, fdirvlan, fdirhash, fdircmd;
/* currently IPv6 is not supported, must be programmed with 0 */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0),
input->formatted.src_ip[0]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1),
input->formatted.src_ip[1]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2),
input->formatted.src_ip[2]);
/* record the source address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA, input->formatted.src_ip[0]);
/* record the first 32 bits of the destination address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA, input->formatted.dst_ip[0]);
/* record source and destination port (little-endian)*/
fdirport = ntohs(input->formatted.dst_port);
@ -1643,29 +1681,80 @@ s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
fdirport |= ntohs(input->formatted.src_port);
IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
/* record the first 32 bits of the destination address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA, input->formatted.dst_ip[0]);
/* record vlan (little-endian) and flex_bytes(big-endian) */
fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
fdirvlan |= ntohs(input->formatted.vlan_id);
IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
/* record the source address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA, input->formatted.src_ip[0]);
/* configure FDIRHASH register */
fdirhash = input->formatted.bkt_hash;
fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
/*
* flush all previous writes to make certain registers are
* programmed prior to issuing the command
*/
IXGBE_WRITE_FLUSH(hw);
/* configure FDIRCMD register */
fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
if (queue == IXGBE_FDIR_DROP_QUEUE)
fdircmd |= IXGBE_FDIRCMD_DROP;
fdircmd |= input->formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
fdircmd |= (u32)input->formatted.vm_pool << IXGBE_FDIRCMD_VT_POOL_SHIFT;
/* we only want the bucket hash so drop the upper 16 bits */
fdirhash = ixgbe_atr_compute_hash_82599(input,
IXGBE_ATR_BUCKET_HASH_KEY);
fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd);
return 0;
}
s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
u16 soft_id)
{
u32 fdirhash;
u32 fdircmd = 0;
u32 retry_count;
s32 err = 0;
/* configure FDIRHASH register */
fdirhash = input->formatted.bkt_hash;
fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
/* flush hash to HW */
IXGBE_WRITE_FLUSH(hw);
/* Query if filter is present */
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, IXGBE_FDIRCMD_CMD_QUERY_REM_FILT);
for (retry_count = 10; retry_count; retry_count--) {
/* allow 10us for query to process */
udelay(10);
/* verify query completed successfully */
fdircmd = IXGBE_READ_REG(hw, IXGBE_FDIRCMD);
if (!(fdircmd & IXGBE_FDIRCMD_CMD_MASK))
break;
}
if (!retry_count)
err = IXGBE_ERR_FDIR_REINIT_FAILED;
/* if filter exists in hardware then remove it */
if (fdircmd & IXGBE_FDIRCMD_FILTER_VALID) {
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
IXGBE_WRITE_FLUSH(hw);
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
IXGBE_FDIRCMD_CMD_REMOVE_FLOW);
}
return err;
}
/**
* ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register
* @hw: pointer to hardware structure

2
drivers/net/ixgbe/ixgbe_main.c
View file

@ -5130,7 +5130,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->atr_sample_rate = 20;
adapter->ring_feature[RING_F_FDIR].indices =
IXGBE_MAX_FDIR_INDICES;
adapter->fdir_pballoc = 0;
adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
#ifdef IXGBE_FCOE
adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;

25
drivers/net/ixgbe/ixgbe_type.h
View file

@ -2056,9 +2056,10 @@ enum {
#define IXGBE_VFLREC(_i) (0x00700 + (_i * 4))
enum ixgbe_fdir_pballoc_type {
IXGBE_FDIR_PBALLOC_64K = 0,
IXGBE_FDIR_PBALLOC_128K,
IXGBE_FDIR_PBALLOC_256K,
IXGBE_FDIR_PBALLOC_NONE = 0,
IXGBE_FDIR_PBALLOC_64K = 1,
IXGBE_FDIR_PBALLOC_128K = 2,
IXGBE_FDIR_PBALLOC_256K = 3,
};
#define IXGBE_FDIR_PBALLOC_SIZE_SHIFT 16
@ -2112,7 +2113,7 @@ enum ixgbe_fdir_pballoc_type {
#define IXGBE_FDIRCMD_CMD_ADD_FLOW 0x00000001
#define IXGBE_FDIRCMD_CMD_REMOVE_FLOW 0x00000002
#define IXGBE_FDIRCMD_CMD_QUERY_REM_FILT 0x00000003
#define IXGBE_FDIRCMD_CMD_QUERY_REM_HASH 0x00000007
#define IXGBE_FDIRCMD_FILTER_VALID 0x00000004
#define IXGBE_FDIRCMD_FILTER_UPDATE 0x00000008
#define IXGBE_FDIRCMD_IPv6DMATCH 0x00000010
#define IXGBE_FDIRCMD_L4TYPE_UDP 0x00000020
@ -2131,6 +2132,8 @@ enum ixgbe_fdir_pballoc_type {
#define IXGBE_FDIR_INIT_DONE_POLL 10
#define IXGBE_FDIRCMD_CMD_POLL 10
#define IXGBE_FDIR_DROP_QUEUE 127
/* Manageablility Host Interface defines */
#define IXGBE_HI_MAX_BLOCK_BYTE_LENGTH 1792 /* Num of bytes in range */
#define IXGBE_HI_MAX_BLOCK_DWORD_LENGTH 448 /* Num of dwords in range */
@ -2350,7 +2353,7 @@ union ixgbe_atr_input {
* src_port - 2 bytes
* dst_port - 2 bytes
* flex_bytes - 2 bytes
* rsvd0 - 2 bytes - space reserved must be 0.
* bkt_hash - 2 bytes
*/
struct {
u8 vm_pool;
@ -2361,7 +2364,7 @@ union ixgbe_atr_input {
__be16 src_port;
__be16 dst_port;
__be16 flex_bytes;
__be16 rsvd0;
__be16 bkt_hash;
} formatted;
__be32 dword_stream[11];
};
@ -2382,16 +2385,6 @@ union ixgbe_atr_hash_dword {
__be32 dword;
};
struct ixgbe_atr_input_masks {
__be16 rsvd0;
__be16 vlan_id_mask;
__be32 dst_ip_mask[4];
__be32 src_ip_mask[4];
__be16 src_port_mask;
__be16 dst_port_mask;
__be16 flex_mask;
};
enum ixgbe_eeprom_type {
ixgbe_eeprom_uninitialized = 0,
ixgbe_eeprom_spi,