return err;
}
+static unsigned int aq_nic_map_xdp(struct aq_nic_s *self,
+ struct xdp_frame *xdpf,
+ struct aq_ring_s *ring)
+{
+ struct device *dev = aq_nic_get_dev(self);
+ struct aq_ring_buff_s *first = NULL;
+ unsigned int dx = ring->sw_tail;
+ struct aq_ring_buff_s *dx_buff;
+ struct skb_shared_info *sinfo;
+ unsigned int frag_count = 0U;
+ unsigned int nr_frags = 0U;
+ unsigned int ret = 0U;
+ u16 total_len;
+
+ dx_buff = &ring->buff_ring[dx];
+ dx_buff->flags = 0U;
+
+ sinfo = xdp_get_shared_info_from_frame(xdpf);
+ total_len = xdpf->len;
+ dx_buff->len = total_len;
+ if (xdp_frame_has_frags(xdpf)) {
+ nr_frags = sinfo->nr_frags;
+ total_len += sinfo->xdp_frags_size;
+ }
+ dx_buff->pa = dma_map_single(dev, xdpf->data, dx_buff->len,
+ DMA_TO_DEVICE);
+
+ if (unlikely(dma_mapping_error(dev, dx_buff->pa)))
+ goto exit;
+
+ first = dx_buff;
+ dx_buff->len_pkt = total_len;
+ dx_buff->is_sop = 1U;
+ dx_buff->is_mapped = 1U;
+ ++ret;
+
+ for (; nr_frags--; ++frag_count) {
+ skb_frag_t *frag = &sinfo->frags[frag_count];
+ unsigned int frag_len = skb_frag_size(frag);
+ unsigned int buff_offset = 0U;
+ unsigned int buff_size = 0U;
+ dma_addr_t frag_pa;
+
+ while (frag_len) {
+ if (frag_len > AQ_CFG_TX_FRAME_MAX)
+ buff_size = AQ_CFG_TX_FRAME_MAX;
+ else
+ buff_size = frag_len;
+
+ frag_pa = skb_frag_dma_map(dev, frag, buff_offset,
+ buff_size, DMA_TO_DEVICE);
+
+ if (unlikely(dma_mapping_error(dev, frag_pa)))
+ goto mapping_error;
+
+ dx = aq_ring_next_dx(ring, dx);
+ dx_buff = &ring->buff_ring[dx];
+
+ dx_buff->flags = 0U;
+ dx_buff->len = buff_size;
+ dx_buff->pa = frag_pa;
+ dx_buff->is_mapped = 1U;
+ dx_buff->eop_index = 0xffffU;
+
+ frag_len -= buff_size;
+ buff_offset += buff_size;
+
+ ++ret;
+ }
+ }
+
+ first->eop_index = dx;
+ dx_buff->is_eop = 1U;
+ dx_buff->skb = NULL;
+ dx_buff->xdpf = xdpf;
+ goto exit;
+
+mapping_error:
+ for (dx = ring->sw_tail;
+ ret > 0;
+ --ret, dx = aq_ring_next_dx(ring, dx)) {
+ dx_buff = &ring->buff_ring[dx];
+
+ if (!dx_buff->pa)
+ continue;
+ if (unlikely(dx_buff->is_sop))
+ dma_unmap_single(dev, dx_buff->pa, dx_buff->len,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_page(dev, dx_buff->pa, dx_buff->len,
+ DMA_TO_DEVICE);
+ }
+
+exit:
+ return ret;
+}
+
unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
struct aq_ring_s *ring)
{
first->eop_index = dx;
dx_buff->is_eop = 1U;
dx_buff->skb = skb;
+ dx_buff->xdpf = NULL;
goto exit;
mapping_error:
return ret;
}
+int aq_nic_xmit_xdpf(struct aq_nic_s *aq_nic, struct aq_ring_s *tx_ring,
+ struct xdp_frame *xdpf)
+{
+ u16 queue_index = AQ_NIC_RING2QMAP(aq_nic, tx_ring->idx);
+ struct net_device *ndev = aq_nic_get_ndev(aq_nic);
+ struct skb_shared_info *sinfo;
+ int cpu = smp_processor_id();
+ int err = NETDEV_TX_BUSY;
+ struct netdev_queue *nq;
+ unsigned int frags = 1;
+
+ if (xdp_frame_has_frags(xdpf)) {
+ sinfo = xdp_get_shared_info_from_frame(xdpf);
+ frags += sinfo->nr_frags;
+ }
+
+ if (frags > AQ_CFG_SKB_FRAGS_MAX)
+ return err;
+
+ nq = netdev_get_tx_queue(ndev, tx_ring->idx);
+ __netif_tx_lock(nq, cpu);
+
+ aq_ring_update_queue_state(tx_ring);
+
+ /* Above status update may stop the queue. Check this. */
+ if (__netif_subqueue_stopped(aq_nic_get_ndev(aq_nic), queue_index))
+ goto out;
+
+ frags = aq_nic_map_xdp(aq_nic, xdpf, tx_ring);
+ if (likely(frags))
+ err = aq_nic->aq_hw_ops->hw_ring_tx_xmit(aq_nic->aq_hw, tx_ring,
+ frags);
+out:
+ __netif_tx_unlock(nq);
+
+ return err;
+}
+
int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
{
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+static void aq_get_rxpages_xdp(struct aq_ring_buff_s *buff,
+ struct xdp_buff *xdp)
+{
+ struct skb_shared_info *sinfo;
+ int i;
+
+ if (xdp_buff_has_frags(xdp)) {
+ sinfo = xdp_get_shared_info_from_buff(xdp);
+
+ for (i = 0; i < sinfo->nr_frags; i++) {
+ skb_frag_t *frag = &sinfo->frags[i];
+
+ page_ref_inc(skb_frag_page(frag));
+ }
+ }
+ page_ref_inc(buff->rxdata.page);
+}
+
static inline void aq_free_rxpage(struct aq_rxpage *rxpage, struct device *dev)
{
unsigned int len = PAGE_SIZE << rxpage->order;
}
}
- if (unlikely(buff->is_eop && buff->skb)) {
+ if (likely(!buff->is_eop))
+ goto out;
+
+ if (buff->skb) {
u64_stats_update_begin(&self->stats.tx.syncp);
++self->stats.tx.packets;
self->stats.tx.bytes += buff->skb->len;
u64_stats_update_end(&self->stats.tx.syncp);
-
dev_kfree_skb_any(buff->skb);
- buff->skb = NULL;
+ } else if (buff->xdpf) {
+ u64_stats_update_begin(&self->stats.tx.syncp);
+ ++self->stats.tx.packets;
+ self->stats.tx.bytes += xdp_get_frame_len(buff->xdpf);
+ u64_stats_update_end(&self->stats.tx.syncp);
+ xdp_return_frame_rx_napi(buff->xdpf);
}
+
+out:
+ buff->skb = NULL;
+ buff->xdpf = NULL;
buff->pa = 0U;
buff->eop_index = 0xffffU;
self->sw_head = aq_ring_next_dx(self, self->sw_head);
__skb_incr_checksum_unnecessary(skb);
}
-#define AQ_SKB_ALIGN SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
-int aq_ring_rx_clean(struct aq_ring_s *self,
- struct napi_struct *napi,
- int *work_done,
- int budget)
+static struct sk_buff *aq_xdp_run_prog(struct aq_nic_s *aq_nic,
+ struct xdp_buff *xdp,
+ struct aq_ring_s *rx_ring,
+ struct aq_ring_buff_s *buff)
+{
+ int result = NETDEV_TX_BUSY;
+ struct aq_ring_s *tx_ring;
+ struct xdp_frame *xdpf;
+ struct bpf_prog *prog;
+ u32 act = XDP_ABORTED;
+ struct sk_buff *skb;
+
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.packets;
+ rx_ring->stats.rx.bytes += xdp_get_buff_len(xdp);
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+
+ prog = READ_ONCE(rx_ring->xdp_prog);
+ if (!prog)
+ goto pass;
+
+ prefetchw(xdp->data_hard_start); /* xdp_frame write */
+
+ /* single buffer XDP program, but packet is multi buffer, aborted */
+ if (xdp_buff_has_frags(xdp) && !prog->aux->xdp_has_frags)
+ goto out_aborted;
+
+ act = bpf_prog_run_xdp(prog, xdp);
+ switch (act) {
+ case XDP_PASS:
+pass:
+ xdpf = xdp_convert_buff_to_frame(xdp);
+ if (unlikely(!xdpf))
+ goto out_aborted;
+ skb = xdp_build_skb_from_frame(xdpf, aq_nic->ndev);
+ if (!skb)
+ goto out_aborted;
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.xdp_pass;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ aq_get_rxpages_xdp(buff, xdp);
+ return skb;
+ case XDP_TX:
+ xdpf = xdp_convert_buff_to_frame(xdp);
+ if (unlikely(!xdpf))
+ goto out_aborted;
+ tx_ring = aq_nic->aq_ring_tx[rx_ring->idx];
+ result = aq_nic_xmit_xdpf(aq_nic, tx_ring, xdpf);
+ if (result == NETDEV_TX_BUSY)
+ goto out_aborted;
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.xdp_tx;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ aq_get_rxpages_xdp(buff, xdp);
+ break;
+ case XDP_REDIRECT:
+ if (xdp_do_redirect(aq_nic->ndev, xdp, prog) < 0)
+ goto out_aborted;
+ xdp_do_flush();
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.xdp_redirect;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ aq_get_rxpages_xdp(buff, xdp);
+ break;
+ default:
+ fallthrough;
+ case XDP_ABORTED:
+out_aborted:
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.xdp_aborted;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ trace_xdp_exception(aq_nic->ndev, prog, act);
+ bpf_warn_invalid_xdp_action(aq_nic->ndev, prog, act);
+ break;
+ case XDP_DROP:
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.xdp_drop;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ break;
+ }
+
+ return ERR_PTR(-result);
+}
+
+static bool aq_add_rx_fragment(struct device *dev,
+ struct aq_ring_s *ring,
+ struct aq_ring_buff_s *buff,
+ struct xdp_buff *xdp)
+{
+ struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp);
+ struct aq_ring_buff_s *buff_ = buff;
+
+ memset(sinfo, 0, sizeof(*sinfo));
+ do {
+ skb_frag_t *frag;
+
+ if (unlikely(sinfo->nr_frags >= MAX_SKB_FRAGS))
+ return true;
+
+ frag = &sinfo->frags[sinfo->nr_frags++];
+ buff_ = &ring->buff_ring[buff_->next];
+ dma_sync_single_range_for_cpu(dev,
+ buff_->rxdata.daddr,
+ buff_->rxdata.pg_off,
+ buff_->len,
+ DMA_FROM_DEVICE);
+ skb_frag_off_set(frag, buff_->rxdata.pg_off);
+ skb_frag_size_set(frag, buff_->len);
+ sinfo->xdp_frags_size += buff_->len;
+ __skb_frag_set_page(frag, buff_->rxdata.page);
+
+ buff_->is_cleaned = 1;
+
+ buff->is_ip_cso &= buff_->is_ip_cso;
+ buff->is_udp_cso &= buff_->is_udp_cso;
+ buff->is_tcp_cso &= buff_->is_tcp_cso;
+ buff->is_cso_err |= buff_->is_cso_err;
+
+ if (page_is_pfmemalloc(buff_->rxdata.page))
+ xdp_buff_set_frag_pfmemalloc(xdp);
+
+ } while (!buff_->is_eop);
+
+ xdp_buff_set_frags_flag(xdp);
+
+ return false;
+}
+
+static int __aq_ring_rx_clean(struct aq_ring_s *self, struct napi_struct *napi,
+ int *work_done, int budget)
{
struct net_device *ndev = aq_nic_get_ndev(self->aq_nic);
bool is_rsc_completed = true;
return err;
}
+static int __aq_ring_xdp_clean(struct aq_ring_s *rx_ring,
+ struct napi_struct *napi, int *work_done,
+ int budget)
+{
+ int frame_sz = rx_ring->page_offset + rx_ring->frame_max +
+ rx_ring->tail_size;
+ struct aq_nic_s *aq_nic = rx_ring->aq_nic;
+ bool is_rsc_completed = true;
+ struct device *dev;
+ int err = 0;
+
+ dev = aq_nic_get_dev(aq_nic);
+ for (; (rx_ring->sw_head != rx_ring->hw_head) && budget;
+ rx_ring->sw_head = aq_ring_next_dx(rx_ring, rx_ring->sw_head),
+ --budget, ++(*work_done)) {
+ struct aq_ring_buff_s *buff = &rx_ring->buff_ring[rx_ring->sw_head];
+ bool is_ptp_ring = aq_ptp_ring(rx_ring->aq_nic, rx_ring);
+ struct aq_ring_buff_s *buff_ = NULL;
+ struct sk_buff *skb = NULL;
+ unsigned int next_ = 0U;
+ struct xdp_buff xdp;
+ void *hard_start;
+
+ if (buff->is_cleaned)
+ continue;
+
+ if (!buff->is_eop) {
+ buff_ = buff;
+ do {
+ if (buff_->next >= rx_ring->size) {
+ err = -EIO;
+ goto err_exit;
+ }
+ next_ = buff_->next;
+ buff_ = &rx_ring->buff_ring[next_];
+ is_rsc_completed =
+ aq_ring_dx_in_range(rx_ring->sw_head,
+ next_,
+ rx_ring->hw_head);
+
+ if (unlikely(!is_rsc_completed))
+ break;
+
+ buff->is_error |= buff_->is_error;
+ buff->is_cso_err |= buff_->is_cso_err;
+ } while (!buff_->is_eop);
+
+ if (!is_rsc_completed) {
+ err = 0;
+ goto err_exit;
+ }
+ if (buff->is_error ||
+ (buff->is_lro && buff->is_cso_err)) {
+ buff_ = buff;
+ do {
+ if (buff_->next >= rx_ring->size) {
+ err = -EIO;
+ goto err_exit;
+ }
+ next_ = buff_->next;
+ buff_ = &rx_ring->buff_ring[next_];
+
+ buff_->is_cleaned = true;
+ } while (!buff_->is_eop);
+
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.errors;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ continue;
+ }
+ }
+
+ if (buff->is_error) {
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.errors;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ continue;
+ }
+
+ dma_sync_single_range_for_cpu(dev,
+ buff->rxdata.daddr,
+ buff->rxdata.pg_off,
+ buff->len, DMA_FROM_DEVICE);
+ hard_start = page_address(buff->rxdata.page) +
+ buff->rxdata.pg_off - rx_ring->page_offset;
+
+ if (is_ptp_ring)
+ buff->len -=
+ aq_ptp_extract_ts(rx_ring->aq_nic, skb,
+ aq_buf_vaddr(&buff->rxdata),
+ buff->len);
+
+ xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq);
+ xdp_prepare_buff(&xdp, hard_start, rx_ring->page_offset,
+ buff->len, false);
+ if (!buff->is_eop) {
+ if (aq_add_rx_fragment(dev, rx_ring, buff, &xdp)) {
+ u64_stats_update_begin(&rx_ring->stats.rx.syncp);
+ ++rx_ring->stats.rx.packets;
+ rx_ring->stats.rx.bytes += xdp_get_buff_len(&xdp);
+ ++rx_ring->stats.rx.xdp_aborted;
+ u64_stats_update_end(&rx_ring->stats.rx.syncp);
+ continue;
+ }
+ }
+
+ skb = aq_xdp_run_prog(aq_nic, &xdp, rx_ring, buff);
+ if (IS_ERR(skb) || !skb)
+ continue;
+
+ if (buff->is_vlan)
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ buff->vlan_rx_tag);
+
+ aq_rx_checksum(rx_ring, buff, skb);
+
+ skb_set_hash(skb, buff->rss_hash,
+ buff->is_hash_l4 ? PKT_HASH_TYPE_L4 :
+ PKT_HASH_TYPE_NONE);
+ /* Send all PTP traffic to 0 queue */
+ skb_record_rx_queue(skb,
+ is_ptp_ring ? 0
+ : AQ_NIC_RING2QMAP(rx_ring->aq_nic,
+ rx_ring->idx));
+
+ napi_gro_receive(napi, skb);
+ }
+
+err_exit:
+ return err;
+}
+
+int aq_ring_rx_clean(struct aq_ring_s *self,
+ struct napi_struct *napi,
+ int *work_done,
+ int budget)
+{
+ if (static_branch_unlikely(&aq_xdp_locking_key))
+ return __aq_ring_xdp_clean(self, napi, work_done, budget);
+ else
+ return __aq_ring_rx_clean(self, napi, work_done, budget);
+}
+
void aq_ring_hwts_rx_clean(struct aq_ring_s *self, struct aq_nic_s *aq_nic)
{
#if IS_REACHABLE(CONFIG_PTP_1588_CLOCK)
data[++count] = self->stats.rx.alloc_fails;
data[++count] = self->stats.rx.skb_alloc_fails;
data[++count] = self->stats.rx.polls;
+ data[++count] = self->stats.rx.pg_flips;
+ data[++count] = self->stats.rx.pg_reuses;
+ data[++count] = self->stats.rx.pg_losts;
+ data[++count] = self->stats.rx.xdp_aborted;
+ data[++count] = self->stats.rx.xdp_drop;
+ data[++count] = self->stats.rx.xdp_pass;
+ data[++count] = self->stats.rx.xdp_tx;
+ data[++count] = self->stats.rx.xdp_invalid;
+ data[++count] = self->stats.rx.xdp_redirect;
} while (u64_stats_fetch_retry_irq(&self->stats.rx.syncp, start));
} else {
/* This data should mimic aq_ethtool_queue_tx_stat_names structure */
projects / platform / kernel / linux-starfive.git / commitdiff