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| @@ -157,15 +157,15 @@ static const char pkt_data[] = · 156 unmodified lines | |||
| 157 | 157 | ||
| 158 | static inline u32 umem_nb_free(struct xdp_umem_uqueue *q, u32 nb) | 158 | static inline u32 umem_nb_free(struct xdp_umem_uqueue *q, u32 nb) |
| 159 | { | 159 | { |
| 160 | u32 free_entries = q->size - (q->cached_prod - q->cached_cons); | 160 | u32 free_entries = q->cached_cons - q->cached_prod; |
| 161 | 161 | ||
| 162 | if (free_entries >= nb) | 162 | if (free_entries >= nb) |
| 163 | return free_entries; | 163 | return free_entries; |
| 164 | 164 | ||
| 165 | /* Refresh the local tail pointer */ | 165 | /* Refresh the local tail pointer */ |
| 166 | q->cached_cons = *q->consumer; | 166 | q->cached_cons = *q->consumer + q->size; |
| 167 | 167 | ||
| 168 | return q->size - (q->cached_prod - q->cached_cons); | 168 | return q->cached_cons - q->cached_prod; |
| 169 | } | 169 | } |
| 170 | 170 | ||
| 171 | static inline u32 xq_nb_free(struct xdp_uqueue *q, u32 ndescs) | 171 | static inline u32 xq_nb_free(struct xdp_uqueue *q, u32 ndescs) |
| @@ -439,6 +439,7 @@ static struct xdp_umem *xdp_umem_configure(int sfd) · 267 unmodified lines | |||
| 439 | umem->fq.producer = umem->fq.map + off.fr.producer; | 439 | umem->fq.producer = umem->fq.map + off.fr.producer; |
| 440 | umem->fq.consumer = umem->fq.map + off.fr.consumer; | 440 | umem->fq.consumer = umem->fq.map + off.fr.consumer; |
| 441 | umem->fq.ring = umem->fq.map + off.fr.desc; | 441 | umem->fq.ring = umem->fq.map + off.fr.desc; |
| 442 | umem->fq.cached_cons = FQ_NUM_DESCS; | ||
| 442 | 443 | ||
| 443 | umem->cq.map = mmap(0, off.cr.desc + | 444 | umem->cq.map = mmap(0, off.cr.desc + |
| 444 | CQ_NUM_DESCS * sizeof(u64), | 445 | CQ_NUM_DESCS * sizeof(u64), |
| @@ -535,6 +536,7 @@ static struct xdpsock *xsk_configure(struct xdp_umem *umem) · 90 unmodified lines | |||
| 535 | xsk->tx.producer = xsk->tx.map + off.tx.producer; | 536 | xsk->tx.producer = xsk->tx.map + off.tx.producer; |
| 536 | xsk->tx.consumer = xsk->tx.map + off.tx.consumer; | 537 | xsk->tx.consumer = xsk->tx.map + off.tx.consumer; |
| 537 | xsk->tx.ring = xsk->tx.map + off.tx.desc; | 538 | xsk->tx.ring = xsk->tx.map + off.tx.desc; |
| 539 | xsk->tx.cached_cons = NUM_DESCS; | ||
| 538 | 540 | ||
| 539 | sxdp.sxdp_family = PF_XDP; | 541 | sxdp.sxdp_family = PF_XDP; |
| 540 | sxdp.sxdp_ifindex = opt_ifindex; | 542 | sxdp.sxdp_ifindex = opt_ifindex; |