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Differential D10385 Diff 27424 sys/dev/vnic/nicvf_queues.c

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sys/dev/vnic/nicvf_queues.c

Show First 20 Lines • Show All 1,705 Lines • ▼ Show 20 Linesnicvf_sq_disable(struct nicvf *nic, int qidx)
sq_cfg = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, qidx); sq_cfg = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, qidx);
sq_cfg &= ~NICVF_SQ_EN; sq_cfg &= ~NICVF_SQ_EN;
nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, sq_cfg); nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, sq_cfg);
} }
static void static void
nicvf_sq_free_used_descs(struct nicvf *nic, struct snd_queue *sq, int qidx) nicvf_sq_free_used_descs(struct nicvf *nic, struct snd_queue *sq, int qidx)
{ {
uint64_t head, tail; uint64_t head;
struct snd_buff *snd_buff; struct snd_buff *snd_buff;
struct sq_hdr_subdesc *hdr; struct sq_hdr_subdesc *hdr;
NICVF_TX_LOCK(sq); NICVF_TX_LOCK(sq);
head = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, qidx) >> 4; head = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, qidx) >> 4;
tail = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_TAIL, qidx) >> 4;
while (sq->head != head) { while (sq->head != head) {
vangyzenUnsubmitted
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One wonders if tail should be used in this loop. I have no idea.

vangyzen: One wonders if `tail` should be used in this loop. I have no idea.
kanAuthorUnsubmitted
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Again, as of not it is a pure write-only variable that is not affecting existing code. If one needs one in the future, one is welcome to resurrect it. This patch is not about implementing missing code.

kan: Again, as of not it is a pure write-only variable that is not affecting existing code. If one…
hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, sq->head); hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, sq->head);
if (hdr->subdesc_type != SQ_DESC_TYPE_HEADER) { if (hdr->subdesc_type != SQ_DESC_TYPE_HEADER) {
nicvf_put_sq_desc(sq, 1); nicvf_put_sq_desc(sq, 1);
continue; continue;
} }
snd_buff = &sq->snd_buff[sq->head]; snd_buff = &sq->snd_buff[sq->head];
if (snd_buff->mbuf != NULL) { if (snd_buff->mbuf != NULL) {
bus_dmamap_unload(sq->snd_buff_dmat, snd_buff->dmap); bus_dmamap_unload(sq->snd_buff_dmat, snd_buff->dmap);
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