}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
+#if IS_ENABLED(CONFIG_QETH_L3)
+static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+ struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
+ struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
+ struct net_device *dev = skb->dev;
+
+ if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
+ dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
+ "FAKELL", skb->len);
+ return;
+ }
+
+ if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
+ u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
+ ETH_P_IP;
+ unsigned char tg_addr[ETH_ALEN];
+
+ skb_reset_network_header(skb);
+ switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
+ case QETH_CAST_MULTICAST:
+ if (prot == ETH_P_IP)
+ ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
+ else
+ ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
+ QETH_CARD_STAT_INC(card, rx_multicast);
+ break;
+ case QETH_CAST_BROADCAST:
+ ether_addr_copy(tg_addr, dev->broadcast);
+ QETH_CARD_STAT_INC(card, rx_multicast);
+ break;
+ default:
+ if (card->options.sniffer)
+ skb->pkt_type = PACKET_OTHERHOST;
+ ether_addr_copy(tg_addr, dev->dev_addr);
+ }
+
+ if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
+ dev_hard_header(skb, dev, prot, tg_addr,
+ &l3_hdr->next_hop.rx.src_mac, skb->len);
+ else
+ dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
+ skb->len);
+ }
+
+ /* copy VLAN tag from hdr into skb */
+ if (!card->options.sniffer &&
+ (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
+ QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
+ u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
+ l3_hdr->vlan_id :
+ l3_hdr->next_hop.rx.vlan_id;
+
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
+ }
+}
+#endif
+
+static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
+ struct qeth_hdr *hdr)
+{
+ bool is_cso;
+
+ switch (hdr->hdr.l2.id) {
+ case QETH_HEADER_TYPE_OSN:
+ skb_push(skb, sizeof(*hdr));
+ skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
+ QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
+ QETH_CARD_STAT_INC(card, rx_packets);
+
+ card->osn_info.data_cb(skb);
+ return;
+#if IS_ENABLED(CONFIG_QETH_L3)
+ case QETH_HEADER_TYPE_LAYER3:
+ qeth_l3_rebuild_skb(card, skb, hdr);
+ is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
+ break;
+#endif
+ case QETH_HEADER_TYPE_LAYER2:
+ is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
+ break;
+ default:
+ /* never happens */
+ dev_kfree_skb_any(skb);
+ return;
+ }
+
+ if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ QETH_CARD_STAT_INC(card, rx_skb_csum);
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+
+ skb->protocol = eth_type_trans(skb, skb->dev);
+
+ QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
+ QETH_CARD_STAT_INC(card, rx_packets);
+ if (skb_is_nonlinear(skb)) {
+ QETH_CARD_STAT_INC(card, rx_sg_skbs);
+ QETH_CARD_STAT_ADD(card, rx_sg_frags,
+ skb_shinfo(skb)->nr_frags);
+ }
+
+ napi_gro_receive(&card->napi, skb);
+}
+
static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
{
struct page *page = virt_to_page(data);
return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
}
-struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
- struct qeth_qdio_buffer *qethbuffer,
- struct qdio_buffer_element **__element, int *__offset,
- struct qeth_hdr **hdr)
+static int qeth_extract_skb(struct qeth_card *card,
+ struct qeth_qdio_buffer *qethbuffer,
+ struct qdio_buffer_element **__element,
+ int *__offset)
{
struct qdio_buffer_element *element = *__element;
struct qdio_buffer *buffer = qethbuffer->buffer;
int offset = *__offset;
bool use_rx_sg = false;
unsigned int headroom;
+ struct qeth_hdr *hdr;
struct sk_buff *skb;
int skb_len = 0;
/* qeth_hdr must not cross element boundaries */
while (element->length < offset + sizeof(struct qeth_hdr)) {
if (qeth_is_last_sbale(element))
- return NULL;
+ return -ENODATA;
element++;
offset = 0;
}
- *hdr = element->addr + offset;
- offset += sizeof(struct qeth_hdr);
+ hdr = element->addr + offset;
+ offset += sizeof(*hdr);
skb = NULL;
- switch ((*hdr)->hdr.l2.id) {
+ switch (hdr->hdr.l2.id) {
case QETH_HEADER_TYPE_LAYER2:
- skb_len = (*hdr)->hdr.l2.pkt_length;
+ skb_len = hdr->hdr.l2.pkt_length;
linear_len = ETH_HLEN;
headroom = 0;
break;
case QETH_HEADER_TYPE_LAYER3:
- skb_len = (*hdr)->hdr.l3.length;
+ skb_len = hdr->hdr.l3.length;
if (!IS_LAYER3(card)) {
QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
goto walk_packet;
}
- if ((*hdr)->hdr.l3.flags & QETH_HDR_PASSTHRU) {
+ if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
linear_len = ETH_HLEN;
headroom = 0;
break;
}
- if ((*hdr)->hdr.l3.flags & QETH_HDR_IPV6)
+ if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
linear_len = sizeof(struct ipv6hdr);
else
linear_len = sizeof(struct iphdr);
headroom = ETH_HLEN;
break;
case QETH_HEADER_TYPE_OSN:
- skb_len = (*hdr)->hdr.osn.pdu_length;
+ skb_len = hdr->hdr.osn.pdu_length;
if (!IS_OSN(card)) {
QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
goto walk_packet;
headroom = sizeof(struct qeth_hdr);
break;
default:
- if ((*hdr)->hdr.l2.id & QETH_HEADER_MASK_INVAL)
+ if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
QETH_CARD_STAT_INC(card, rx_frame_errors);
else
QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
/* Can't determine packet length, drop the whole buffer. */
- return NULL;
+ return -EPROTONOSUPPORT;
}
if (skb_len < linear_len) {
QETH_CARD_STAT_INC(card,
rx_length_errors);
}
- return NULL;
+ return -EMSGSIZE;
}
element++;
offset = 0;
*__element = element;
*__offset = offset;
- if (use_rx_sg) {
- QETH_CARD_STAT_INC(card, rx_sg_skbs);
- QETH_CARD_STAT_ADD(card, rx_sg_frags,
- skb_shinfo(skb)->nr_frags);
+
+ qeth_receive_skb(card, skb, hdr);
+ return 0;
+}
+
+static int qeth_extract_skbs(struct qeth_card *card, int budget,
+ struct qeth_qdio_buffer *buf, bool *done)
+{
+ int work_done = 0;
+
+ WARN_ON_ONCE(!budget);
+ *done = false;
+
+ while (budget) {
+ if (qeth_extract_skb(card, buf, &card->rx.b_element,
+ &card->rx.e_offset)) {
+ *done = true;
+ break;
+ }
+
+ work_done++;
+ budget--;
}
- return skb;
+
+ return work_done;
}
-EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
int qeth_poll(struct napi_struct *napi, int budget)
{
struct qeth_card *card = container_of(napi, struct qeth_card, napi);
int work_done = 0;
struct qeth_qdio_buffer *buffer;
- int done;
int new_budget = budget;
+ bool done;
while (1) {
if (!card->rx.b_count) {
if (!(card->rx.qdio_err &&
qeth_check_qdio_errors(card, buffer->buffer,
card->rx.qdio_err, "qinerr")))
- work_done +=
- card->discipline->process_rx_buffer(
- card, new_budget, &done);
+ work_done += qeth_extract_skbs(card, new_budget,
+ buffer, &done);
else
- done = 1;
+ done = true;
if (done) {
QETH_CARD_STAT_INC(card, rx_bufs);
return 0;
}
-static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
- struct qeth_hdr *hdr)
-{
- struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
- struct net_device *dev = skb->dev;
-
- if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
- dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
- "FAKELL", skb->len);
- return;
- }
-
- if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
- u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
- ETH_P_IP;
- unsigned char tg_addr[ETH_ALEN];
-
- skb_reset_network_header(skb);
- switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
- case QETH_CAST_MULTICAST:
- if (prot == ETH_P_IP)
- ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
- else
- ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
- QETH_CARD_STAT_INC(card, rx_multicast);
- break;
- case QETH_CAST_BROADCAST:
- ether_addr_copy(tg_addr, card->dev->broadcast);
- QETH_CARD_STAT_INC(card, rx_multicast);
- break;
- default:
- if (card->options.sniffer)
- skb->pkt_type = PACKET_OTHERHOST;
- ether_addr_copy(tg_addr, card->dev->dev_addr);
- }
-
- if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
- card->dev->header_ops->create(skb, card->dev, prot,
- tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
- skb->len);
- else
- card->dev->header_ops->create(skb, card->dev, prot,
- tg_addr, "FAKELL", skb->len);
- }
-
- /* copy VLAN tag from hdr into skb */
- if (!card->options.sniffer &&
- (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
- QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
- u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
- hdr->hdr.l3.vlan_id :
- hdr->hdr.l3.next_hop.rx.vlan_id;
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
- }
-
- qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
-}
-
-static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
- int budget, int *done)
-{
- int work_done = 0;
- struct sk_buff *skb;
- struct qeth_hdr *hdr;
-
- *done = 0;
- WARN_ON_ONCE(!budget);
- while (budget) {
- skb = qeth_core_get_next_skb(card,
- &card->qdio.in_q->bufs[card->rx.b_index],
- &card->rx.b_element, &card->rx.e_offset, &hdr);
- if (!skb) {
- *done = 1;
- break;
- }
-
- if (hdr->hdr.l3.id == QETH_HEADER_TYPE_LAYER3)
- qeth_l3_rebuild_skb(card, skb, hdr);
-
- skb->protocol = eth_type_trans(skb, skb->dev);
- QETH_CARD_STAT_INC(card, rx_packets);
- QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
-
- napi_gro_receive(&card->napi, skb);
- work_done++;
- budget--;
- }
- return work_done;
-}
-
static void qeth_l3_stop_card(struct qeth_card *card)
{
QETH_CARD_TEXT(card, 2, "stopcard");
struct qeth_discipline qeth_l3_discipline = {
.devtype = &qeth_l3_devtype,
- .process_rx_buffer = qeth_l3_process_inbound_buffer,
.recover = qeth_l3_recover,
.setup = qeth_l3_probe_device,
.remove = qeth_l3_remove_device,
projects / platform / kernel / linux-rpi.git / commitdiff