@@ -8,6 +8,7 @@
#define IXGBE_XDP_CONSUMED BIT(0)
#define IXGBE_XDP_TX BIT(1)
#define IXGBE_XDP_REDIR BIT(2)
+#define IXGBE_XDP_EXIT BIT(3)
#define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
IXGBE_TXD_CMD_RS)
@@ -109,9 +109,13 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
if (likely(act == XDP_REDIRECT)) {
err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog);
- if (err)
- goto out_failure;
- return IXGBE_XDP_REDIR;
+ if (!err)
+ return IXGBE_XDP_REDIR;
+ if (xsk_uses_need_wakeup(rx_ring->xsk_pool) && err == -ENOBUFS)
+ result = IXGBE_XDP_EXIT;
+ else
+ result = IXGBE_XDP_CONSUMED;
+ goto out_failure;
}
switch (act) {
@@ -130,16 +134,17 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
if (result == IXGBE_XDP_CONSUMED)
goto out_failure;
break;
+ case XDP_DROP:
+ result = IXGBE_XDP_CONSUMED;
+ break;
default:
bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
+ result = IXGBE_XDP_CONSUMED;
out_failure:
trace_xdp_exception(rx_ring->netdev, xdp_prog, act);
fallthrough; /* handle aborts by dropping packet */
- case XDP_DROP:
- result = IXGBE_XDP_CONSUMED;
- break;
}
return result;
}
@@ -303,12 +308,16 @@ int ixgbe_clean_rx_irq_zc(struct ixgbe_q_vector *q_vector,
xsk_buff_dma_sync_for_cpu(bi->xdp, rx_ring->xsk_pool);
xdp_res = ixgbe_run_xdp_zc(adapter, rx_ring, bi->xdp);
- if (likely(xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)))
+ if (likely(xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR))) {
xdp_xmit |= xdp_res;
- else if (xdp_res == IXGBE_XDP_CONSUMED)
+ } else if (xdp_res == IXGBE_XDP_EXIT) {
+ failure = true;
+ break;
+ } else if (xdp_res == IXGBE_XDP_CONSUMED) {
xsk_buff_free(bi->xdp);
- else
+ } else if (xdp_res == IXGBE_XDP_PASS) {
goto construct_skb;
+ }
bi->xdp = NULL;
total_rx_packets++;
When XSK pool uses need_wakeup feature, correlate -ENOBUFS that was returned from xdp_do_redirect() with a XSK Rx queue being full. In such case, terminate the Rx processing that is being done on the current HW Rx ring and let the user space consume descriptors from XSK Rx queue so that there is room that driver can use later on. Introduce new internal return code IXGBE_XDP_EXIT that will indicate case described above. Note that it does not affect Tx processing that is bound to the same NAPI context, nor the other Rx rings. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> --- .../ethernet/intel/ixgbe/ixgbe_txrx_common.h | 1 + drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 27 ++++++++++++------- 2 files changed, 19 insertions(+), 9 deletions(-)