diff options
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_rx.c')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_rx.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c index ed4b5a540e6d..d1da7413dc4d 100644 --- a/drivers/net/ethernet/google/gve/gve_rx.c +++ b/drivers/net/ethernet/google/gve/gve_rx.c @@ -10,6 +10,7 @@ #include <linux/etherdevice.h> #include <linux/filter.h> #include <net/xdp.h> +#include <net/xdp_sock_drv.h> static void gve_rx_free_buffer(struct device *dev, struct gve_rx_slot_page_info *page_info, @@ -593,6 +594,31 @@ static struct sk_buff *gve_rx_skb(struct gve_priv *priv, struct gve_rx_ring *rx, return skb; } +static int gve_xsk_pool_redirect(struct net_device *dev, + struct gve_rx_ring *rx, + void *data, int len, + struct bpf_prog *xdp_prog) +{ + struct xdp_buff *xdp; + int err; + + if (rx->xsk_pool->frame_len < len) + return -E2BIG; + xdp = xsk_buff_alloc(rx->xsk_pool); + if (!xdp) { + u64_stats_update_begin(&rx->statss); + rx->xdp_alloc_fails++; + u64_stats_update_end(&rx->statss); + return -ENOMEM; + } + xdp->data_end = xdp->data + len; + memcpy(xdp->data, data, len); + err = xdp_do_redirect(dev, xdp, xdp_prog); + if (err) + xsk_buff_free(xdp); + return err; +} + static int gve_xdp_redirect(struct net_device *dev, struct gve_rx_ring *rx, struct xdp_buff *orig, struct bpf_prog *xdp_prog) { @@ -602,6 +628,10 @@ static int gve_xdp_redirect(struct net_device *dev, struct gve_rx_ring *rx, void *frame; int err; + if (rx->xsk_pool) + return gve_xsk_pool_redirect(dev, rx, orig->data, + len, xdp_prog); + total_len = headroom + SKB_DATA_ALIGN(len) + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); frame = page_frag_alloc(&rx->page_cache, total_len, GFP_ATOMIC); |