Commit c5c2398e authored by Suman Ghosh's avatar Suman Ghosh Committed by Paolo Abeni
Browse files

octeontx2-pf: Prepare for AF_XDP 



Implement necessary APIs required for AF_XDP transmit.

Signed-off-by: default avatarHariprasad Kelam <hkelam@marvell.com>
Signed-off-by: default avatarSuman Ghosh <sumang@marvell.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 25b07c1a

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h

+1 −0
Original line number Diff line number Diff line
@@ -1181,4 +1181,5 @@ static inline int mcam_entry_cmp(const void *a, const void *b) 
dma_addr_t otx2_dma_map_skb_frag(struct otx2_nic *pfvf,

				 struct sk_buff *skb, int seg, int *len);

void otx2_dma_unmap_skb_frags(struct otx2_nic *pfvf, struct sg_list *sg);

int otx2_read_free_sqe(struct otx2_nic *pfvf, u16 qidx);

#endif /* OTX2_COMMON_H */

drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c

+23 −2
Original line number Diff line number Diff line
@@ -30,6 +30,12 @@ 


DEFINE_STATIC_KEY_FALSE(cn10k_ipsec_sa_enabled);



static int otx2_get_free_sqe(struct otx2_snd_queue *sq)

{

	return (sq->cons_head - sq->head - 1 + sq->sqe_cnt)

		& (sq->sqe_cnt - 1);

}



static bool otx2_xdp_rcv_pkt_handler(struct otx2_nic *pfvf,

				     struct bpf_prog *prog,

				     struct nix_cqe_rx_s *cqe,
@@ -1157,7 +1163,7 @@ bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq, 
	/* Check if there is enough room between producer

	 * and consumer index.

	 */

	free_desc = (sq->cons_head - sq->head - 1 + sq->sqe_cnt) & (sq->sqe_cnt - 1);

	free_desc = otx2_get_free_sqe(sq);

	if (free_desc < sq->sqe_thresh)

		return false;
@@ -1396,6 +1402,21 @@ static void otx2_xdp_sqe_add_sg(struct otx2_snd_queue *sq, 
	sq->sg[sq->head].skb = (u64)xdpf;

}



int otx2_read_free_sqe(struct otx2_nic *pfvf, u16 qidx)

{

	struct otx2_snd_queue *sq;

	int free_sqe;



	sq = &pfvf->qset.sq[qidx];

	free_sqe = otx2_get_free_sqe(sq);

	if (free_sqe < sq->sqe_thresh) {

		netdev_warn(pfvf->netdev, "No free sqe for Send queue%d\n", qidx);

		return 0;

	}



	return free_sqe - sq->sqe_thresh;

}



bool otx2_xdp_sq_append_pkt(struct otx2_nic *pfvf, struct xdp_frame *xdpf,

			    u64 iova, int len, u16 qidx, u16 flags)

{
@@ -1404,7 +1425,7 @@ bool otx2_xdp_sq_append_pkt(struct otx2_nic *pfvf, struct xdp_frame *xdpf, 
	int offset, free_sqe;



	sq = &pfvf->qset.sq[qidx];

	free_sqe = (sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb;

	free_sqe = otx2_get_free_sqe(sq);

	if (free_sqe < sq->sqe_thresh)

		return false;