Commit 08fc1cfd authored by Jesper Dangaard Brouer's avatar Jesper Dangaard Brouer Committed by Alexei Starovoitov
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ena: Add XDP frame size to amazon NIC driver 



Frame size ENA_PAGE_SIZE is limited to 16K on systems with larger
PAGE_SIZE than 16K. Change ENA_XDP_MAX_MTU to also take into account
the reserved tailroom.

Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarSameeh Jubran <sameehj@amazon.com>
Cc: Arthur Kiyanovski <akiyano@amazon.com>
Link: https://lore.kernel.org/bpf/158945341384.97035.907403694833419456.stgit@firesoul
parent c88c3518

drivers/net/ethernet/amazon/ena/ena_netdev.c

+1 −0
Original line number Diff line number Diff line
@@ -1606,6 +1606,7 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi, 
		  "%s qid %d\n", __func__, rx_ring->qid);

	res_budget = budget;

	xdp.rxq = &rx_ring->xdp_rxq;

	xdp.frame_sz = ENA_PAGE_SIZE;



	do {

		xdp_verdict = XDP_PASS;

drivers/net/ethernet/amazon/ena/ena_netdev.h

+3 −2
Original line number Diff line number Diff line
@@ -152,7 +152,8 @@ 
 */



#define ENA_XDP_MAX_MTU (ENA_PAGE_SIZE - ETH_HLEN - ETH_FCS_LEN -	\

				VLAN_HLEN - XDP_PACKET_HEADROOM)

			 VLAN_HLEN - XDP_PACKET_HEADROOM -		\

			 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))



#define ENA_IS_XDP_INDEX(adapter, index) (((index) >= (adapter)->xdp_first_ring) && \

	((index) < (adapter)->xdp_first_ring + (adapter)->xdp_num_queues))

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