iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sfc: perform XDP processing on received packets

Browse Source 
Adds a field to hold an attached xdp_prog, but never populates it (see
following patch).  Also, XDP_TX support is deferred to a later patch
in the series.

Track failures of xdp_rxq_info_reg() via per-queue xdp_rxq_info_valid
flags and a per-nic xdp_rxq_info_failed flag. The per-queue flags are
needed to prevent attempts to xdp_rxq_info_unreg() structs that failed
to register.  Possibly the API could be changed in the future to avoid
the need for these flags.

Signed-off-by: Charles McLachlan <cmclachlan@solarflare.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Charles McLachlan
2019-10-31 10:23:23 +00:00
committed by David S. Miller
parent 8c42350116
commit eb9a36be7f
3 changed files with 145 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/sfc/efx.c
View File

@@ -340,6 +340,8 @@ static int efx_poll(struct napi_struct *napi, int budget)
spent = efx_process_channel(channel, budget);
xdp_do_flush_map();
if (spent < budget) {
if (efx_channel_has_rx_queue(channel) &&
efx->irq_rx_adaptive &&
@@ -651,7 +653,7 @@ static void efx_start_datapath(struct efx_nic *efx)
efx->rx_dma_len = (efx->rx_prefix_size +
EFX_MAX_FRAME_LEN(efx->net_dev->mtu) +
efx->type->rx_buffer_padding);
rx_buf_len = (sizeof(struct efx_rx_page_state) +
rx_buf_len = (sizeof(struct efx_rx_page_state) + XDP_PACKET_HEADROOM +
efx->rx_ip_align + efx->rx_dma_len);
if (rx_buf_len <= PAGE_SIZE) {
efx->rx_scatter = efx->type->always_rx_scatter;
@@ -774,6 +776,7 @@ static void efx_stop_datapath(struct efx_nic *efx)
efx_for_each_possible_channel_tx_queue(tx_queue, channel)
efx_fini_tx_queue(tx_queue);
}
efx->xdp_rxq_info_failed = false;
}
static void efx_remove_channel(struct efx_channel *channel)