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path: root/drivers/s390/net/qeth_l3_main.c
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Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
-rw-r--r--drivers/s390/net/qeth_l3_main.c138
1 files changed, 24 insertions, 114 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index f08b745c2007..eca68da39d05 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -949,9 +949,6 @@ static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
if (cmd->hdr.return_code == 0)
ether_addr_copy(card->dev->dev_addr,
cmd->data.create_destroy_addr.unique_id);
- else
- eth_random_addr(card->dev->dev_addr);
-
return 0;
}
@@ -1685,21 +1682,6 @@ out_error:
return 0;
}
-static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
- struct qeth_cmd_buffer *iob, int len,
- int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
- unsigned long),
- void *reply_param)
-{
- QETH_CARD_TEXT(card, 4, "sendarp");
-
- memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
- memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
- &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
- return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
- reply_cb, reply_param);
-}
-
static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
enum qeth_prot_versions prot,
struct qeth_arp_query_info *qinfo)
@@ -1719,11 +1701,9 @@ static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
return -ENOMEM;
cmd = __ipa_cmd(iob);
cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
- cmd->data.setassparms.data.query_arp.reply_bits = 0;
- cmd->data.setassparms.data.query_arp.no_entries = 0;
- rc = qeth_l3_send_ipa_arp_cmd(card, iob,
- QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
- qeth_l3_arp_query_cb, (void *)qinfo);
+ rc = qeth_send_control_data(card,
+ QETH_SETASS_BASE_LEN + QETH_ARP_CMD_LEN,
+ iob, qeth_l3_arp_query_cb, qinfo);
if (rc)
QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
CARD_DEVID(card), rc);
@@ -1929,22 +1909,6 @@ static int qeth_l3_get_cast_type(struct sk_buff *skb)
}
}
-static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb,
- unsigned int data_len)
-{
- char daddr[16];
-
- hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
- hdr->hdr.l3.length = data_len;
- hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
-
- memset(daddr, 0, sizeof(daddr));
- daddr[0] = 0xfe;
- daddr[1] = 0x80;
- memcpy(&daddr[8], iucv_trans_hdr(skb)->destUserID, 8);
- memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
-}
-
static u8 qeth_l3_cast_type_to_flag(int cast_type)
{
if (cast_type == RTN_MULTICAST)
@@ -1960,6 +1924,7 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type,
unsigned int data_len)
{
+ struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
hdr->hdr.l3.length = data_len;
@@ -1968,6 +1933,15 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
} else {
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+
+ if (skb->protocol == htons(ETH_P_AF_IUCV)) {
+ l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
+ l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
+ memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
+ iucv_trans_hdr(skb)->destUserID, 8);
+ return;
+ }
+
if (skb->ip_summed == CHECKSUM_PARTIAL) {
qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
/* some HW requires combined L3+L4 csum offload: */
@@ -2012,13 +1986,11 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
} else {
/* IPv6 */
const struct rt6_info *rt = skb_rt6_info(skb);
- const struct in6_addr *next_hop;
if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
- next_hop = &rt->rt6i_gateway;
+ l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
else
- next_hop = &ipv6_hdr(skb)->daddr;
- memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
+ l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
hdr->hdr.l3.flags |= QETH_HDR_IPV6;
if (card->info.type != QETH_CARD_TYPE_IQD)
@@ -2044,84 +2016,25 @@ static void qeth_l3_fixup_headers(struct sk_buff *skb)
static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
struct qeth_qdio_out_q *queue, int ipv, int cast_type)
{
- unsigned int hw_hdr_len, proto_len, frame_len, elements;
unsigned char eth_hdr[ETH_HLEN];
- bool is_tso = skb_is_gso(skb);
- unsigned int data_offset = 0;
- struct qeth_hdr *hdr = NULL;
- unsigned int hd_len = 0;
- int push_len, rc;
- bool is_sg;
-
- if (is_tso) {
- hw_hdr_len = sizeof(struct qeth_hdr_tso);
- proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb) -
- ETH_HLEN;
- } else {
- hw_hdr_len = sizeof(struct qeth_hdr);
- proto_len = 0;
- }
+ unsigned int hw_hdr_len;
+ int rc;
/* re-use the L2 header area for the HW header: */
+ hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
+ sizeof(struct qeth_hdr);
rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
if (rc)
return rc;
skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
skb_pull(skb, ETH_HLEN);
- frame_len = skb->len;
qeth_l3_fixup_headers(skb);
- push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len,
- &elements);
- if (push_len < 0)
- return push_len;
- if (is_tso || !push_len) {
- /* HW header needs its own buffer element. */
- hd_len = hw_hdr_len + proto_len;
- data_offset = push_len + proto_len;
- }
- memset(hdr, 0, hw_hdr_len);
-
- if (skb->protocol == htons(ETH_P_AF_IUCV)) {
- qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len);
- } else {
- qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len);
- if (is_tso)
- qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
- frame_len - proto_len, skb,
- proto_len);
- }
-
- is_sg = skb_is_nonlinear(skb);
- if (IS_IQD(card)) {
- rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
- hd_len);
- } else {
- /* TODO: drop skb_orphan() once TX completion is fast enough */
- skb_orphan(skb);
- rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
- hd_len, elements);
- }
-
- if (!rc) {
- if (card->options.performance_stats) {
- card->perf_stats.buf_elements_sent += elements;
- if (is_sg)
- card->perf_stats.sg_skbs_sent++;
- if (is_tso) {
- card->perf_stats.large_send_bytes += frame_len;
- card->perf_stats.large_send_cnt++;
- }
- }
- } else {
- if (!push_len)
- kmem_cache_free(qeth_core_header_cache, hdr);
- if (rc == -EBUSY) {
- /* roll back to ETH header */
- skb_pull(skb, push_len);
- skb_push(skb, ETH_HLEN);
- skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
- }
+ rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header);
+ if (rc == -EBUSY) {
+ /* roll back to ETH header */
+ skb_push(skb, ETH_HLEN);
+ skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
}
return rc;
}
@@ -2366,9 +2279,6 @@ static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
rc = qeth_l3_iqd_read_initial_mac(card);
if (rc)
goto out;
-
- if (card->options.hsuid[0])
- memcpy(card->dev->perm_addr, card->options.hsuid, 9);
} else
return -ENODEV;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.