diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 971ba3322038..0d7177083708 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -1548,7 +1548,6 @@ void i40e_free_rx_resources(struct i40e_ring *rx_ring) int i40e_setup_rx_descriptors(struct i40e_ring *rx_ring) { struct device *dev = rx_ring->dev; - int err; u64_stats_init(&rx_ring->syncp); @@ -1569,14 +1568,6 @@ int i40e_setup_rx_descriptors(struct i40e_ring *rx_ring) rx_ring->next_to_process = 0; rx_ring->next_to_use = 0; - /* XDP RX-queue info only needed for RX rings exposed to XDP */ - if (rx_ring->vsi->type == I40E_VSI_MAIN) { - err = xdp_rxq_info_reg(&rx_ring->xdp_rxq, rx_ring->netdev, - rx_ring->queue_index, rx_ring->q_vector->napi.napi_id); - if (err < 0) - return err; - } - rx_ring->xdp_prog = rx_ring->vsi->xdp_prog; rx_ring->rx_bi = @@ -2087,7 +2078,8 @@ static void i40e_put_rx_buffer(struct i40e_ring *rx_ring, static void i40e_process_rx_buffs(struct i40e_ring *rx_ring, int xdp_res, struct xdp_buff *xdp) { - u32 next = rx_ring->next_to_clean; + u32 nr_frags = xdp_get_shared_info_from_buff(xdp)->nr_frags; + u32 next = rx_ring->next_to_clean, i = 0; struct i40e_rx_buffer *rx_buffer; xdp->flags = 0; @@ -2100,10 +2092,10 @@ static void i40e_process_rx_buffs(struct i40e_ring *rx_ring, int xdp_res, if (!rx_buffer->page) continue; - if (xdp_res == I40E_XDP_CONSUMED) - rx_buffer->pagecnt_bias++; - else + if (xdp_res != I40E_XDP_CONSUMED) i40e_rx_buffer_flip(rx_buffer, xdp->frame_sz); + else if (i++ <= nr_frags) + rx_buffer->pagecnt_bias++; /* EOP buffer will be put in i40e_clean_rx_irq() */ if (next == rx_ring->next_to_process) @@ -2117,20 +2109,20 @@ static void i40e_process_rx_buffs(struct i40e_ring *rx_ring, int xdp_res, * i40e_construct_skb - Allocate skb and populate it * @rx_ring: rx descriptor ring to transact packets on * @xdp: xdp_buff pointing to the data - * @nr_frags: number of buffers for the packet * * This function allocates an skb. It then populates it with the page * data from the current receive descriptor, taking care to set up the * skb correctly. */ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring, - struct xdp_buff *xdp, - u32 nr_frags) + struct xdp_buff *xdp) { unsigned int size = xdp->data_end - xdp->data; struct i40e_rx_buffer *rx_buffer; + struct skb_shared_info *sinfo; unsigned int headlen; struct sk_buff *skb; + u32 nr_frags = 0; /* prefetch first cache line of first page */ net_prefetch(xdp->data); @@ -2168,6 +2160,10 @@ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring, memcpy(__skb_put(skb, headlen), xdp->data, ALIGN(headlen, sizeof(long))); + if (unlikely(xdp_buff_has_frags(xdp))) { + sinfo = xdp_get_shared_info_from_buff(xdp); + nr_frags = sinfo->nr_frags; + } rx_buffer = i40e_rx_bi(rx_ring, rx_ring->next_to_clean); /* update all of the pointers */ size -= headlen; @@ -2187,9 +2183,8 @@ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring, } if (unlikely(xdp_buff_has_frags(xdp))) { - struct skb_shared_info *sinfo, *skinfo = skb_shinfo(skb); + struct skb_shared_info *skinfo = skb_shinfo(skb); - sinfo = xdp_get_shared_info_from_buff(xdp); memcpy(&skinfo->frags[skinfo->nr_frags], &sinfo->frags[0], sizeof(skb_frag_t) * nr_frags); @@ -2212,17 +2207,17 @@ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring, * i40e_build_skb - Build skb around an existing buffer * @rx_ring: Rx descriptor ring to transact packets on * @xdp: xdp_buff pointing to the data - * @nr_frags: number of buffers for the packet * * This function builds an skb around an existing Rx buffer, taking care * to set up the skb correctly and avoid any memcpy overhead. */ static struct sk_buff *i40e_build_skb(struct i40e_ring *rx_ring, - struct xdp_buff *xdp, - u32 nr_frags) + struct xdp_buff *xdp) { unsigned int metasize = xdp->data - xdp->data_meta; + struct skb_shared_info *sinfo; struct sk_buff *skb; + u32 nr_frags; /* Prefetch first cache line of first page. If xdp->data_meta * is unused, this points exactly as xdp->data, otherwise we @@ -2231,6 +2226,11 @@ static struct sk_buff *i40e_build_skb(struct i40e_ring *rx_ring, */ net_prefetch(xdp->data_meta); + if (unlikely(xdp_buff_has_frags(xdp))) { + sinfo = xdp_get_shared_info_from_buff(xdp); + nr_frags = sinfo->nr_frags; + } + /* build an skb around the page buffer */ skb = napi_build_skb(xdp->data_hard_start, xdp->frame_sz); if (unlikely(!skb)) @@ -2243,9 +2243,6 @@ static struct sk_buff *i40e_build_skb(struct i40e_ring *rx_ring, skb_metadata_set(skb, metasize); if (unlikely(xdp_buff_has_frags(xdp))) { - struct skb_shared_info *sinfo; - - sinfo = xdp_get_shared_info_from_buff(xdp); xdp_update_skb_shared_info(skb, nr_frags, sinfo->xdp_frags_size, nr_frags * xdp->frame_sz, @@ -2589,9 +2586,9 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget, total_rx_bytes += size; } else { if (ring_uses_build_skb(rx_ring)) - skb = i40e_build_skb(rx_ring, xdp, nfrags); + skb = i40e_build_skb(rx_ring, xdp); else - skb = i40e_construct_skb(rx_ring, xdp, nfrags); + skb = i40e_construct_skb(rx_ring, xdp); /* drop if we failed to retrieve a buffer */ if (!skb) { |