static int rx_net_frames_from_rb(struct sbd_ring_buffer *rb) { int rcvd = 0; struct link_device *ld = rb->ld; struct mem_link_device *mld = ld_to_mem_link_device(ld); unsigned int num_frames = rb_usage(rb); while (rcvd < num_frames) { struct sk_buff *skb; skb = sbd_pio_rx(rb); if (!skb) break; /* The $rcvd must be accumulated here, because $skb can be freed in pass_skb_to_net(). */ rcvd++; pass_skb_to_net(mld, skb); } if (rcvd < num_frames) { struct io_device *iod = rb->iod; struct link_device *ld = rb->ld; struct modem_ctl *mc = ld->mc; mif_err("%s: %s<-%s: WARN! rcvd %d < num_frames %d\n", ld->name, iod->name, mc->name, rcvd, num_frames); } return rcvd; }
/** @brief extract all IPC link frames from an SBD RB In a while loop,\n 1) receives each IPC link frame stored in the @b @@RB.\n 2) passes it to the DEMUX layer immediately.\n @param rb the pointer to a mem_ring_buffer instance @retval "> 0" if valid data received @retval "= 0" if no data received @retval "< 0" if ANY error */ static int rx_ipc_frames_from_rb(struct sbd_ring_buffer *rb) { int rcvd = 0; struct link_device *ld = rb->ld; struct mem_link_device *mld = ld_to_mem_link_device(ld); unsigned int qlen = rb->len; unsigned int in = *rb->wp; unsigned int out = *rb->rp; unsigned int num_frames = circ_get_usage(qlen, in, out); while (rcvd < num_frames) { struct sk_buff *skb; skb = sbd_pio_rx(rb); if (!skb) { #ifdef CONFIG_SEC_MODEM_DEBUG panic("skb alloc failed."); #else modemctl_notify_event(MDM_CRASH_NO_MEM); #endif break; } /* The $rcvd must be accumulated here, because $skb can be freed in pass_skb_to_demux(). */ rcvd++; if (skbpriv(skb)->lnk_hdr) { u8 ch = rb->ch; u8 fch = sipc5_get_ch(skb->data); if (fch != ch) { mif_err("frm.ch:%d != rb.ch:%d\n", fch, ch); dev_kfree_skb_any(skb); modemctl_notify_event(MDM_EVENT_CP_ABNORMAL_RX); continue; } } pass_skb_to_demux(mld, skb); } if (rcvd < num_frames) { struct io_device *iod = rb->iod; struct modem_ctl *mc = ld->mc; mif_err("%s: %s<-%s: WARN! rcvd %d < num_frames %d\n", ld->name, iod->name, mc->name, rcvd, num_frames); } return rcvd; }
static int rx_ipc_frames_from_rb(struct sbd_ring_buffer *rb) { int rcvd = 0; struct link_device *ld = rb->ld; struct mem_link_device *mld = ld_to_mem_link_device(ld); unsigned int qlen = rb->len; unsigned int in = *rb->wp; unsigned int out = *rb->rp; unsigned int num_frames = circ_get_usage(qlen, in, out); while (rcvd < num_frames) { struct sk_buff *skb; skb = sbd_pio_rx(rb); if (!skb) { /* TODO : Replace with panic() */ mem_forced_cp_crash(mld); break; } /* The $rcvd must be accumulated here, because $skb can be freed in pass_skb_to_demux(). */ rcvd++; if (skbpriv(skb)->lnk_hdr) { u8 ch = rb->ch; u8 fch = sipc5_get_ch(skb->data); if (fch != ch) { mif_err("frm.ch:%d != rb.ch:%d\n", fch, ch); dev_kfree_skb_any(skb); continue; } } pass_skb_to_demux(mld, skb); } if (rcvd < num_frames) { struct io_device *iod = rb->iod; struct modem_ctl *mc = ld->mc; mif_err("%s: %s<-%s: WARN! rcvd %d < num_frames %d\n", ld->name, iod->name, mc->name, rcvd, num_frames); } return rcvd; }