diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c index c32c62462c84..1ba29bb85b67 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c @@ -179,7 +179,7 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi, break; /* prevent any other reads prior to eop_desc */ - read_barrier_depends(); + smp_rmb(); i40e_trace(clean_tx_irq, tx_ring, tx_desc, tx_buf); /* if the descriptor isn't done, no work yet to do */ @@ -358,14 +358,14 @@ static bool i40e_set_new_dynamic_itr(struct i40e_ring_container *rc) { enum i40e_latency_range new_latency_range = rc->latency_range; u32 new_itr = rc->itr; - int bytes_per_int; + int bytes_per_usec; unsigned int usecs, estimated_usecs; if (rc->total_packets == 0 || !rc->itr) return false; usecs = (rc->itr << 1) * ITR_COUNTDOWN_START; - bytes_per_int = rc->total_bytes / usecs; + bytes_per_usec = rc->total_bytes / usecs; /* The calculations in this algorithm depend on interrupts actually * firing at the ITR rate. This may not happen if the packet rate is @@ -391,18 +391,18 @@ static bool i40e_set_new_dynamic_itr(struct i40e_ring_container *rc) */ switch (new_latency_range) { case I40E_LOWEST_LATENCY: - if (bytes_per_int > 10) + if (bytes_per_usec > 10) new_latency_range = I40E_LOW_LATENCY; break; case I40E_LOW_LATENCY: - if (bytes_per_int > 20) + if (bytes_per_usec > 20) new_latency_range = I40E_BULK_LATENCY; - else if (bytes_per_int <= 10) + else if (bytes_per_usec <= 10) new_latency_range = I40E_LOWEST_LATENCY; break; case I40E_BULK_LATENCY: default: - if (bytes_per_int <= 20) + if (bytes_per_usec <= 20) new_latency_range = I40E_LOW_LATENCY; break; } @@ -1409,9 +1409,7 @@ static u32 i40e_buildreg_itr(const int type, const u16 itr) u32 val; val = I40E_VFINT_DYN_CTLN1_INTENA_MASK | - /* Don't clear PBA because that can cause lost interrupts that - * came in while we were cleaning/polling - */ + I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK | (type << I40E_VFINT_DYN_CTLN1_ITR_INDX_SHIFT) | (itr << I40E_VFINT_DYN_CTLN1_INTERVAL_SHIFT); @@ -2014,10 +2012,30 @@ bool __i40evf_chk_linearize(struct sk_buff *skb) /* Walk through fragments adding latest fragment, testing it, and * then removing stale fragments from the sum. */ - stale = &skb_shinfo(skb)->frags[0]; - for (;;) { + for (stale = &skb_shinfo(skb)->frags[0];; stale++) { + int stale_size = skb_frag_size(stale); + sum += skb_frag_size(frag++); + /* The stale fragment may present us with a smaller + * descriptor than the actual fragment size. To account + * for that we need to remove all the data on the front and + * figure out what the remainder would be in the last + * descriptor associated with the fragment. + */ + if (stale_size > I40E_MAX_DATA_PER_TXD) { + int align_pad = -(stale->page_offset) & + (I40E_MAX_READ_REQ_SIZE - 1); + + sum -= align_pad; + stale_size -= align_pad; + + do { + sum -= I40E_MAX_DATA_PER_TXD_ALIGNED; + stale_size -= I40E_MAX_DATA_PER_TXD_ALIGNED; + } while (stale_size > I40E_MAX_DATA_PER_TXD); + } + /* if sum is negative we failed to make sufficient progress */ if (sum < 0) return true; @@ -2025,7 +2043,7 @@ bool __i40evf_chk_linearize(struct sk_buff *skb) if (!nr_frags--) break; - sum -= skb_frag_size(stale++); + sum -= stale_size; } return false; |