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ice: Move common functions to ice_txrx_lib.c
In preparation of AF XDP, move functions that will be used both by skb and zero-copy paths to a new file called ice_txrx_lib.c. This allows us to avoid using ifdefs to control the staticness of said functions. Move other functions (ice_rx_csum, ice_rx_hash and ice_ptype_to_htype) called only by the moved ones to the new file as well. Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Krzysztof Kazimierczak
Jeff Kirsher
parent
efc2214b60
commit
0891d6d4b1
@ -15,6 +15,7 @@ ice-y := ice_main.o \
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ice_sched.o \
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ice_base.o \
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ice_lib.o \
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ice_txrx_lib.o \
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ice_txrx.o \
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ice_flex_pipe.o \
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ice_ethtool.o
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@ -7,6 +7,7 @@
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#include <linux/mm.h>
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#include <linux/bpf_trace.h>
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#include <net/xdp.h>
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#include "ice_txrx_lib.h"
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#include "ice_lib.h"
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#include "ice.h"
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#include "ice_dcb_lib.h"
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@ -396,37 +397,6 @@ err:
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return -ENOMEM;
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}
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/**
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* ice_release_rx_desc - Store the new tail and head values
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* @rx_ring: ring to bump
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* @val: new head index
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*/
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static void ice_release_rx_desc(struct ice_ring *rx_ring, u32 val)
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{
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u16 prev_ntu = rx_ring->next_to_use;
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rx_ring->next_to_use = val;
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/* update next to alloc since we have filled the ring */
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rx_ring->next_to_alloc = val;
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/* QRX_TAIL will be updated with any tail value, but hardware ignores
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* the lower 3 bits. This makes it so we only bump tail on meaningful
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* boundaries. Also, this allows us to bump tail on intervals of 8 up to
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* the budget depending on the current traffic load.
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*/
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val &= ~0x7;
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if (prev_ntu != val) {
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/* Force memory writes to complete before letting h/w
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* know there are new descriptors to fetch. (Only
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* applicable for weak-ordered memory model archs,
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* such as IA-64).
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*/
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wmb();
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writel(val, rx_ring->tail);
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}
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}
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/**
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* ice_rx_offset - Return expected offset into page to access data
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* @rx_ring: Ring we are requesting offset of
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@ -438,89 +408,6 @@ static unsigned int ice_rx_offset(struct ice_ring *rx_ring)
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return ice_is_xdp_ena_vsi(rx_ring->vsi) ? XDP_PACKET_HEADROOM : 0;
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}
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/**
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* ice_xdp_ring_update_tail - Updates the XDP Tx ring tail register
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* @xdp_ring: XDP Tx ring
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*
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* This function updates the XDP Tx ring tail register.
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*/
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static void ice_xdp_ring_update_tail(struct ice_ring *xdp_ring)
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{
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/* Force memory writes to complete before letting h/w
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* know there are new descriptors to fetch.
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*/
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wmb();
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writel_relaxed(xdp_ring->next_to_use, xdp_ring->tail);
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}
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/**
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* ice_xmit_xdp_ring - submit single packet to XDP ring for transmission
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* @data: packet data pointer
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* @size: packet data size
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* @xdp_ring: XDP ring for transmission
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*/
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static int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring)
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{
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u16 i = xdp_ring->next_to_use;
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struct ice_tx_desc *tx_desc;
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struct ice_tx_buf *tx_buf;
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dma_addr_t dma;
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if (!unlikely(ICE_DESC_UNUSED(xdp_ring))) {
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xdp_ring->tx_stats.tx_busy++;
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return ICE_XDP_CONSUMED;
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}
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dma = dma_map_single(xdp_ring->dev, data, size, DMA_TO_DEVICE);
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if (dma_mapping_error(xdp_ring->dev, dma))
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return ICE_XDP_CONSUMED;
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tx_buf = &xdp_ring->tx_buf[i];
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tx_buf->bytecount = size;
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tx_buf->gso_segs = 1;
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tx_buf->raw_buf = data;
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/* record length, and DMA address */
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dma_unmap_len_set(tx_buf, len, size);
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dma_unmap_addr_set(tx_buf, dma, dma);
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tx_desc = ICE_TX_DESC(xdp_ring, i);
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tx_desc->buf_addr = cpu_to_le64(dma);
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tx_desc->cmd_type_offset_bsz = build_ctob(ICE_TXD_LAST_DESC_CMD, 0,
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size, 0);
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/* Make certain all of the status bits have been updated
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* before next_to_watch is written.
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*/
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smp_wmb();
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i++;
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if (i == xdp_ring->count)
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i = 0;
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tx_buf->next_to_watch = tx_desc;
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xdp_ring->next_to_use = i;
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return ICE_XDP_TX;
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}
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/**
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* ice_xmit_xdp_buff - convert an XDP buffer to an XDP frame and send it
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* @xdp: XDP buffer
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* @xdp_ring: XDP Tx ring
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*
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* Returns negative on failure, 0 on success.
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*/
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static int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring)
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{
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struct xdp_frame *xdpf = convert_to_xdp_frame(xdp);
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if (unlikely(!xdpf))
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return ICE_XDP_CONSUMED;
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return ice_xmit_xdp_ring(xdpf->data, xdpf->len, xdp_ring);
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}
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/**
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* ice_run_xdp - Executes an XDP program on initialized xdp_buff
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* @rx_ring: Rx ring
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@ -612,29 +499,6 @@ ice_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
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return n - drops;
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}
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/**
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* ice_finalize_xdp_rx - Bump XDP Tx tail and/or flush redirect map
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* @rx_ring: Rx ring
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* @xdp_res: Result of the receive batch
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*
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* This function bumps XDP Tx tail and/or flush redirect map, and
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* should be called when a batch of packets has been processed in the
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* napi loop.
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*/
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static void
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ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res)
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{
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if (xdp_res & ICE_XDP_REDIR)
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xdp_do_flush_map();
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if (xdp_res & ICE_XDP_TX) {
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struct ice_ring *xdp_ring =
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rx_ring->vsi->xdp_rings[rx_ring->q_index];
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ice_xdp_ring_update_tail(xdp_ring);
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}
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}
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/**
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* ice_alloc_mapped_page - recycle or make a new page
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* @rx_ring: ring to use
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@ -1031,23 +895,6 @@ static bool ice_cleanup_headers(struct sk_buff *skb)
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return false;
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}
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/**
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* ice_test_staterr - tests bits in Rx descriptor status and error fields
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* @rx_desc: pointer to receive descriptor (in le64 format)
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* @stat_err_bits: value to mask
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*
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* This function does some fast chicanery in order to return the
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* value of the mask which is really only used for boolean tests.
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* The status_error_len doesn't need to be shifted because it begins
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* at offset zero.
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*/
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static bool
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ice_test_staterr(union ice_32b_rx_flex_desc *rx_desc, const u16 stat_err_bits)
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{
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return !!(rx_desc->wb.status_error0 &
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cpu_to_le16(stat_err_bits));
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}
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/**
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* ice_is_non_eop - process handling of non-EOP buffers
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* @rx_ring: Rx ring being processed
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@ -1073,154 +920,6 @@ ice_is_non_eop(struct ice_ring *rx_ring, union ice_32b_rx_flex_desc *rx_desc,
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return true;
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}
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/**
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* ice_ptype_to_htype - get a hash type
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* @ptype: the ptype value from the descriptor
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*
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* Returns a hash type to be used by skb_set_hash
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*/
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static enum pkt_hash_types ice_ptype_to_htype(u8 __always_unused ptype)
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{
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return PKT_HASH_TYPE_NONE;
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}
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/**
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* ice_rx_hash - set the hash value in the skb
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* @rx_ring: descriptor ring
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* @rx_desc: specific descriptor
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* @skb: pointer to current skb
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* @rx_ptype: the ptype value from the descriptor
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*/
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static void
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ice_rx_hash(struct ice_ring *rx_ring, union ice_32b_rx_flex_desc *rx_desc,
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struct sk_buff *skb, u8 rx_ptype)
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{
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struct ice_32b_rx_flex_desc_nic *nic_mdid;
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u32 hash;
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if (!(rx_ring->netdev->features & NETIF_F_RXHASH))
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return;
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if (rx_desc->wb.rxdid != ICE_RXDID_FLEX_NIC)
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return;
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nic_mdid = (struct ice_32b_rx_flex_desc_nic *)rx_desc;
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hash = le32_to_cpu(nic_mdid->rss_hash);
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skb_set_hash(skb, hash, ice_ptype_to_htype(rx_ptype));
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}
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/**
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* ice_rx_csum - Indicate in skb if checksum is good
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* @ring: the ring we care about
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* @skb: skb currently being received and modified
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* @rx_desc: the receive descriptor
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* @ptype: the packet type decoded by hardware
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*
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* skb->protocol must be set before this function is called
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*/
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static void
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ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
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union ice_32b_rx_flex_desc *rx_desc, u8 ptype)
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{
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struct ice_rx_ptype_decoded decoded;
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u32 rx_error, rx_status;
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bool ipv4, ipv6;
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rx_status = le16_to_cpu(rx_desc->wb.status_error0);
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rx_error = rx_status;
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decoded = ice_decode_rx_desc_ptype(ptype);
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/* Start with CHECKSUM_NONE and by default csum_level = 0 */
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skb->ip_summed = CHECKSUM_NONE;
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skb_checksum_none_assert(skb);
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/* check if Rx checksum is enabled */
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if (!(ring->netdev->features & NETIF_F_RXCSUM))
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return;
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/* check if HW has decoded the packet and checksum */
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if (!(rx_status & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
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return;
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if (!(decoded.known && decoded.outer_ip))
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return;
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ipv4 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
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(decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV4);
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ipv6 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
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(decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV6);
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if (ipv4 && (rx_error & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
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BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
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goto checksum_fail;
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else if (ipv6 && (rx_status &
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(BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
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goto checksum_fail;
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/* check for L4 errors and handle packets that were not able to be
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* checksummed due to arrival speed
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*/
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if (rx_error & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
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goto checksum_fail;
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/* Only report checksum unnecessary for TCP, UDP, or SCTP */
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switch (decoded.inner_prot) {
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case ICE_RX_PTYPE_INNER_PROT_TCP:
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case ICE_RX_PTYPE_INNER_PROT_UDP:
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case ICE_RX_PTYPE_INNER_PROT_SCTP:
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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default:
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break;
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}
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return;
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checksum_fail:
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ring->vsi->back->hw_csum_rx_error++;
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}
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/**
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* ice_process_skb_fields - Populate skb header fields from Rx descriptor
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* @rx_ring: Rx descriptor ring packet is being transacted on
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* @rx_desc: pointer to the EOP Rx descriptor
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* @skb: pointer to current skb being populated
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* @ptype: the packet type decoded by hardware
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*
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* This function checks the ring, descriptor, and packet information in
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* order to populate the hash, checksum, VLAN, protocol, and
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* other fields within the skb.
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*/
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static void
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ice_process_skb_fields(struct ice_ring *rx_ring,
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union ice_32b_rx_flex_desc *rx_desc,
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struct sk_buff *skb, u8 ptype)
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{
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ice_rx_hash(rx_ring, rx_desc, skb, ptype);
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/* modifies the skb - consumes the enet header */
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skb->protocol = eth_type_trans(skb, rx_ring->netdev);
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ice_rx_csum(rx_ring, skb, rx_desc, ptype);
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}
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/**
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* ice_receive_skb - Send a completed packet up the stack
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* @rx_ring: Rx ring in play
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* @skb: packet to send up
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* @vlan_tag: VLAN tag for packet
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*
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* This function sends the completed packet (via. skb) up the stack using
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* gro receive functions (with/without VLAN tag)
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*/
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static void
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ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag)
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{
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if ((rx_ring->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
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(vlan_tag & VLAN_VID_MASK))
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__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
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napi_gro_receive(&rx_ring->q_vector->napi, skb);
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}
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/**
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* ice_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
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* @rx_ring: Rx descriptor ring to transact packets on
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@ -22,16 +22,6 @@
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#define ICE_RX_BUF_WRITE 16 /* Must be power of 2 */
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#define ICE_MAX_TXQ_PER_TXQG 128
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static inline __le64
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build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag)
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{
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return cpu_to_le64(ICE_TX_DESC_DTYPE_DATA |
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(td_cmd << ICE_TXD_QW1_CMD_S) |
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(td_offset << ICE_TXD_QW1_OFFSET_S) |
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((u64)size << ICE_TXD_QW1_TX_BUF_SZ_S) |
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(td_tag << ICE_TXD_QW1_L2TAG1_S));
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}
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/* We are assuming that the cache line is always 64 Bytes here for ice.
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* In order to make sure that is a correct assumption there is a check in probe
|
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* to print a warning if the read from GLPCI_CNF2 tells us that the cache line
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273
drivers/net/ethernet/intel/ice/ice_txrx_lib.c
Normal file
273
drivers/net/ethernet/intel/ice/ice_txrx_lib.c
Normal file
@ -0,0 +1,273 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019, Intel Corporation. */
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#include "ice_txrx_lib.h"
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/**
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* ice_release_rx_desc - Store the new tail and head values
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* @rx_ring: ring to bump
|
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* @val: new head index
|
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*/
|
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void ice_release_rx_desc(struct ice_ring *rx_ring, u32 val)
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{
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u16 prev_ntu = rx_ring->next_to_use;
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rx_ring->next_to_use = val;
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/* update next to alloc since we have filled the ring */
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rx_ring->next_to_alloc = val;
|
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|
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/* QRX_TAIL will be updated with any tail value, but hardware ignores
|
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* the lower 3 bits. This makes it so we only bump tail on meaningful
|
||||
* boundaries. Also, this allows us to bump tail on intervals of 8 up to
|
||||
* the budget depending on the current traffic load.
|
||||
*/
|
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val &= ~0x7;
|
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if (prev_ntu != val) {
|
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/* Force memory writes to complete before letting h/w
|
||||
* know there are new descriptors to fetch. (Only
|
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* applicable for weak-ordered memory model archs,
|
||||
* such as IA-64).
|
||||
*/
|
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wmb();
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writel(val, rx_ring->tail);
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}
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}
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/**
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* ice_ptype_to_htype - get a hash type
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* @ptype: the ptype value from the descriptor
|
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*
|
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* Returns a hash type to be used by skb_set_hash
|
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*/
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static enum pkt_hash_types ice_ptype_to_htype(u8 __always_unused ptype)
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{
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return PKT_HASH_TYPE_NONE;
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}
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/**
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* ice_rx_hash - set the hash value in the skb
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* @rx_ring: descriptor ring
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* @rx_desc: specific descriptor
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* @skb: pointer to current skb
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* @rx_ptype: the ptype value from the descriptor
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*/
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static void
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ice_rx_hash(struct ice_ring *rx_ring, union ice_32b_rx_flex_desc *rx_desc,
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struct sk_buff *skb, u8 rx_ptype)
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{
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struct ice_32b_rx_flex_desc_nic *nic_mdid;
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||||
u32 hash;
|
||||
|
||||
if (!(rx_ring->netdev->features & NETIF_F_RXHASH))
|
||||
return;
|
||||
|
||||
if (rx_desc->wb.rxdid != ICE_RXDID_FLEX_NIC)
|
||||
return;
|
||||
|
||||
nic_mdid = (struct ice_32b_rx_flex_desc_nic *)rx_desc;
|
||||
hash = le32_to_cpu(nic_mdid->rss_hash);
|
||||
skb_set_hash(skb, hash, ice_ptype_to_htype(rx_ptype));
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_rx_csum - Indicate in skb if checksum is good
|
||||
* @ring: the ring we care about
|
||||
* @skb: skb currently being received and modified
|
||||
* @rx_desc: the receive descriptor
|
||||
* @ptype: the packet type decoded by hardware
|
||||
*
|
||||
* skb->protocol must be set before this function is called
|
||||
*/
|
||||
static void
|
||||
ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
|
||||
union ice_32b_rx_flex_desc *rx_desc, u8 ptype)
|
||||
{
|
||||
struct ice_rx_ptype_decoded decoded;
|
||||
u32 rx_error, rx_status;
|
||||
bool ipv4, ipv6;
|
||||
|
||||
rx_status = le16_to_cpu(rx_desc->wb.status_error0);
|
||||
rx_error = rx_status;
|
||||
|
||||
decoded = ice_decode_rx_desc_ptype(ptype);
|
||||
|
||||
/* Start with CHECKSUM_NONE and by default csum_level = 0 */
|
||||
skb->ip_summed = CHECKSUM_NONE;
|
||||
skb_checksum_none_assert(skb);
|
||||
|
||||
/* check if Rx checksum is enabled */
|
||||
if (!(ring->netdev->features & NETIF_F_RXCSUM))
|
||||
return;
|
||||
|
||||
/* check if HW has decoded the packet and checksum */
|
||||
if (!(rx_status & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
|
||||
return;
|
||||
|
||||
if (!(decoded.known && decoded.outer_ip))
|
||||
return;
|
||||
|
||||
ipv4 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
|
||||
(decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV4);
|
||||
ipv6 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
|
||||
(decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV6);
|
||||
|
||||
if (ipv4 && (rx_error & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
|
||||
BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
|
||||
goto checksum_fail;
|
||||
else if (ipv6 && (rx_status &
|
||||
(BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
|
||||
goto checksum_fail;
|
||||
|
||||
/* check for L4 errors and handle packets that were not able to be
|
||||
* checksummed due to arrival speed
|
||||
*/
|
||||
if (rx_error & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
|
||||
goto checksum_fail;
|
||||
|
||||
/* Only report checksum unnecessary for TCP, UDP, or SCTP */
|
||||
switch (decoded.inner_prot) {
|
||||
case ICE_RX_PTYPE_INNER_PROT_TCP:
|
||||
case ICE_RX_PTYPE_INNER_PROT_UDP:
|
||||
case ICE_RX_PTYPE_INNER_PROT_SCTP:
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return;
|
||||
|
||||
checksum_fail:
|
||||
ring->vsi->back->hw_csum_rx_error++;
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_process_skb_fields - Populate skb header fields from Rx descriptor
|
||||
* @rx_ring: Rx descriptor ring packet is being transacted on
|
||||
* @rx_desc: pointer to the EOP Rx descriptor
|
||||
* @skb: pointer to current skb being populated
|
||||
* @ptype: the packet type decoded by hardware
|
||||
*
|
||||
* This function checks the ring, descriptor, and packet information in
|
||||
* order to populate the hash, checksum, VLAN, protocol, and
|
||||
* other fields within the skb.
|
||||
*/
|
||||
void
|
||||
ice_process_skb_fields(struct ice_ring *rx_ring,
|
||||
union ice_32b_rx_flex_desc *rx_desc,
|
||||
struct sk_buff *skb, u8 ptype)
|
||||
{
|
||||
ice_rx_hash(rx_ring, rx_desc, skb, ptype);
|
||||
|
||||
/* modifies the skb - consumes the enet header */
|
||||
skb->protocol = eth_type_trans(skb, rx_ring->netdev);
|
||||
|
||||
ice_rx_csum(rx_ring, skb, rx_desc, ptype);
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_receive_skb - Send a completed packet up the stack
|
||||
* @rx_ring: Rx ring in play
|
||||
* @skb: packet to send up
|
||||
* @vlan_tag: VLAN tag for packet
|
||||
*
|
||||
* This function sends the completed packet (via. skb) up the stack using
|
||||
* gro receive functions (with/without VLAN tag)
|
||||
*/
|
||||
void
|
||||
ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag)
|
||||
{
|
||||
if ((rx_ring->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
|
||||
(vlan_tag & VLAN_VID_MASK))
|
||||
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
|
||||
napi_gro_receive(&rx_ring->q_vector->napi, skb);
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_xmit_xdp_ring - submit single packet to XDP ring for transmission
|
||||
* @data: packet data pointer
|
||||
* @size: packet data size
|
||||
* @xdp_ring: XDP ring for transmission
|
||||
*/
|
||||
int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring)
|
||||
{
|
||||
u16 i = xdp_ring->next_to_use;
|
||||
struct ice_tx_desc *tx_desc;
|
||||
struct ice_tx_buf *tx_buf;
|
||||
dma_addr_t dma;
|
||||
|
||||
if (!unlikely(ICE_DESC_UNUSED(xdp_ring))) {
|
||||
xdp_ring->tx_stats.tx_busy++;
|
||||
return ICE_XDP_CONSUMED;
|
||||
}
|
||||
|
||||
dma = dma_map_single(xdp_ring->dev, data, size, DMA_TO_DEVICE);
|
||||
if (dma_mapping_error(xdp_ring->dev, dma))
|
||||
return ICE_XDP_CONSUMED;
|
||||
|
||||
tx_buf = &xdp_ring->tx_buf[i];
|
||||
tx_buf->bytecount = size;
|
||||
tx_buf->gso_segs = 1;
|
||||
tx_buf->raw_buf = data;
|
||||
|
||||
/* record length, and DMA address */
|
||||
dma_unmap_len_set(tx_buf, len, size);
|
||||
dma_unmap_addr_set(tx_buf, dma, dma);
|
||||
|
||||
tx_desc = ICE_TX_DESC(xdp_ring, i);
|
||||
tx_desc->buf_addr = cpu_to_le64(dma);
|
||||
tx_desc->cmd_type_offset_bsz = build_ctob(ICE_TXD_LAST_DESC_CMD, 0,
|
||||
size, 0);
|
||||
|
||||
/* Make certain all of the status bits have been updated
|
||||
* before next_to_watch is written.
|
||||
*/
|
||||
smp_wmb();
|
||||
|
||||
i++;
|
||||
if (i == xdp_ring->count)
|
||||
i = 0;
|
||||
|
||||
tx_buf->next_to_watch = tx_desc;
|
||||
xdp_ring->next_to_use = i;
|
||||
|
||||
return ICE_XDP_TX;
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_xmit_xdp_buff - convert an XDP buffer to an XDP frame and send it
|
||||
* @xdp: XDP buffer
|
||||
* @xdp_ring: XDP Tx ring
|
||||
*
|
||||
* Returns negative on failure, 0 on success.
|
||||
*/
|
||||
int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring)
|
||||
{
|
||||
struct xdp_frame *xdpf = convert_to_xdp_frame(xdp);
|
||||
|
||||
if (unlikely(!xdpf))
|
||||
return ICE_XDP_CONSUMED;
|
||||
|
||||
return ice_xmit_xdp_ring(xdpf->data, xdpf->len, xdp_ring);
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_finalize_xdp_rx - Bump XDP Tx tail and/or flush redirect map
|
||||
* @rx_ring: Rx ring
|
||||
* @xdp_res: Result of the receive batch
|
||||
*
|
||||
* This function bumps XDP Tx tail and/or flush redirect map, and
|
||||
* should be called when a batch of packets has been processed in the
|
||||
* napi loop.
|
||||
*/
|
||||
void ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res)
|
||||
{
|
||||
if (xdp_res & ICE_XDP_REDIR)
|
||||
xdp_do_flush_map();
|
||||
|
||||
if (xdp_res & ICE_XDP_TX) {
|
||||
struct ice_ring *xdp_ring =
|
||||
rx_ring->vsi->xdp_rings[rx_ring->q_index];
|
||||
|
||||
ice_xdp_ring_update_tail(xdp_ring);
|
||||
}
|
||||
}
|
||||
59
drivers/net/ethernet/intel/ice/ice_txrx_lib.h
Normal file
59
drivers/net/ethernet/intel/ice/ice_txrx_lib.h
Normal file
@ -0,0 +1,59 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/* Copyright (c) 2019, Intel Corporation. */
|
||||
|
||||
#ifndef _ICE_TXRX_LIB_H_
|
||||
#define _ICE_TXRX_LIB_H_
|
||||
#include "ice.h"
|
||||
|
||||
/**
|
||||
* ice_test_staterr - tests bits in Rx descriptor status and error fields
|
||||
* @rx_desc: pointer to receive descriptor (in le64 format)
|
||||
* @stat_err_bits: value to mask
|
||||
*
|
||||
* This function does some fast chicanery in order to return the
|
||||
* value of the mask which is really only used for boolean tests.
|
||||
* The status_error_len doesn't need to be shifted because it begins
|
||||
* at offset zero.
|
||||
*/
|
||||
static inline bool
|
||||
ice_test_staterr(union ice_32b_rx_flex_desc *rx_desc, const u16 stat_err_bits)
|
||||
{
|
||||
return !!(rx_desc->wb.status_error0 & cpu_to_le16(stat_err_bits));
|
||||
}
|
||||
|
||||
static inline __le64
|
||||
build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag)
|
||||
{
|
||||
return cpu_to_le64(ICE_TX_DESC_DTYPE_DATA |
|
||||
(td_cmd << ICE_TXD_QW1_CMD_S) |
|
||||
(td_offset << ICE_TXD_QW1_OFFSET_S) |
|
||||
((u64)size << ICE_TXD_QW1_TX_BUF_SZ_S) |
|
||||
(td_tag << ICE_TXD_QW1_L2TAG1_S));
|
||||
}
|
||||
|
||||
/**
|
||||
* ice_xdp_ring_update_tail - Updates the XDP Tx ring tail register
|
||||
* @xdp_ring: XDP Tx ring
|
||||
*
|
||||
* This function updates the XDP Tx ring tail register.
|
||||
*/
|
||||
static inline void ice_xdp_ring_update_tail(struct ice_ring *xdp_ring)
|
||||
{
|
||||
/* Force memory writes to complete before letting h/w
|
||||
* know there are new descriptors to fetch.
|
||||
*/
|
||||
wmb();
|
||||
writel_relaxed(xdp_ring->next_to_use, xdp_ring->tail);
|
||||
}
|
||||
|
||||
void ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res);
|
||||
int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring);
|
||||
int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring);
|
||||
void ice_release_rx_desc(struct ice_ring *rx_ring, u32 val);
|
||||
void
|
||||
ice_process_skb_fields(struct ice_ring *rx_ring,
|
||||
union ice_32b_rx_flex_desc *rx_desc,
|
||||
struct sk_buff *skb, u8 ptype);
|
||||
void
|
||||
ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag);
|
||||
#endif /* !_ICE_TXRX_LIB_H_ */
|
||||
Loading…
Reference in New Issue
Block a user