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octeontx2-pf: Prepare for AF_XDP

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Implement necessary APIs required for AF_XDP transmit.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Suman Ghosh
2025-02-13 11:01:40 +05:30
committed by Paolo Abeni
parent 25b07c1a86
commit c5c2398eb8
2 changed files with 24 additions and 2 deletions
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1
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
View File

@@ -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 */

25
drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
View File

@@ -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;