int enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
struct rte_mbuf *tx_pkt, unsigned short len,
uint8_t sop, uint8_t eop,
uint16_t ol_flags, uint16_t vlan_tag)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
uint16_t mss = 0;
uint8_t cq_entry = eop;
uint8_t vlan_tag_insert = 0;
uint64_t bus_addr = (dma_addr_t)
(tx_pkt->buf_physaddr + RTE_PKTMBUF_HEADROOM);
if (sop) {
if (ol_flags & PKT_TX_VLAN_PKT)
vlan_tag_insert = 1;
if (enic->hw_ip_checksum) {
if (ol_flags & PKT_TX_IP_CKSUM)
mss |= ENIC_CALC_IP_CKSUM;
if (ol_flags & PKT_TX_TCP_UDP_CKSUM)
mss |= ENIC_CALC_TCP_UDP_CKSUM;
}
}
wq_enet_desc_enc(desc,
bus_addr,
len,
mss,
0 /* header_length */,
0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */,
eop,
cq_entry,
0 /* fcoe_encap */,
vlan_tag_insert,
vlan_tag,
0 /* loopback */);
vnic_wq_post(wq, (void *)tx_pkt, bus_addr, len,
sop, eop,
1 /*desc_skip_cnt*/,
cq_entry,
0 /*compressed send*/,
0 /*wrid*/);
return 0;
}
static inline void
usdf_msg_send_segment(struct usdf_tx *tx, struct usdf_ep *ep)
{
struct usdf_msg_qe *msg;
struct rudp_pkt *hdr;
struct usd_wq *wq;
uint32_t index;
size_t cur_iov;
size_t cur_resid;
size_t resid;
const uint8_t *cur_ptr;
const uint8_t *send_ptr;
size_t sge_len;
uint8_t *ptr;
struct usd_wq_post_info *info;
msg = TAILQ_FIRST(&ep->e.msg.ep_posted_wqe);
wq = &(to_qpi(tx->tx_qp)->uq_wq);
index = wq->uwq_post_index;
hdr = (struct rudp_pkt *)(wq->uwq_copybuf + index * USD_SEND_MAX_COPY);
memcpy(hdr, &ep->e.msg.ep_dest->ds_dest.ds_udp.u_hdr,
sizeof(struct usd_udp_hdr));
hdr->msg.src_peer_id = htons(ep->e.msg.ep_lcl_peer_id);
resid = msg->ms_resid;
cur_iov = msg->ms_cur_iov;
cur_ptr = msg->ms_cur_ptr;
cur_resid = msg->ms_iov_resid;
/* save first seq for message */
if (cur_iov == 0 && cur_resid == msg->ms_iov[0].iov_len) {
msg->ms_first_seq = ep->e.msg.ep_next_tx_seq;
}
if (resid < USD_SEND_MAX_COPY - sizeof(*hdr)) {
hdr->msg.opcode = htons(RUDP_OP_LAST);
hdr->msg.m.rc_data.length = htons(resid);
hdr->msg.m.rc_data.seqno = htons(ep->e.msg.ep_next_tx_seq);
++ep->e.msg.ep_next_tx_seq;
sge_len = resid;
ptr = (uint8_t *)(hdr + 1);
while (resid > 0) {
memcpy(ptr, cur_ptr, cur_resid);
ptr += cur_resid;
resid -= cur_resid;
++cur_iov;
cur_ptr = msg->ms_iov[cur_iov].iov_base;
cur_resid = msg->ms_iov[cur_iov].iov_len;
}
/* add packet lengths */
hdr->hdr.uh_ip.tot_len = htons(
sge_len + sizeof(struct rudp_pkt) -
sizeof(struct ether_header));
hdr->hdr.uh_udp.len = htons(
(sizeof(struct rudp_pkt) -
sizeof(struct ether_header) -
sizeof(struct iphdr)) + sge_len);
index = _usd_post_send_one(wq, hdr,
sge_len + sizeof(*hdr), 1);
} else {
struct vnic_wq *vwq;
u_int8_t offload_mode = 0, eop;
u_int16_t mss = 7, header_length = 0, vlan_tag = 0;
u_int8_t vlan_tag_insert = 0, loopback = 0, fcoe_encap = 0;
struct wq_enet_desc *desc;
size_t space;
size_t num_sge;
size_t sent;
vwq = &wq->uwq_vnic_wq;
desc = wq->uwq_next_desc;
space = ep->ep_domain->dom_fabric->fab_dev_attrs->uda_mtu -
sizeof(*hdr);
num_sge = 1;
/* encode header desc */
eop = 0;
wq_enet_desc_enc(desc, (uintptr_t)hdr, sizeof(*hdr),
mss, header_length, offload_mode, eop, 0, fcoe_encap,
vlan_tag_insert, vlan_tag, loopback);
do {
desc = (struct wq_enet_desc *)
((uintptr_t)wq->uwq_desc_ring + (index << 4));
index = (index + 1) & wq->uwq_post_index_mask;
send_ptr = cur_ptr;
if (cur_resid >= space) {
sge_len = space;
eop = 1;
cur_resid -= sge_len;
cur_ptr += sge_len;
} else {
sge_len = cur_resid;
if (num_sge == USDF_MSG_MAX_SGE ||
cur_resid == resid) {
eop = 1;
}
++cur_iov;
cur_ptr = msg->ms_iov[cur_iov].iov_base;
cur_resid = msg->ms_iov[cur_iov].iov_len;
}
wq_enet_desc_enc(desc, (uintptr_t)send_ptr, sge_len,
mss, header_length, offload_mode, eop, eop,
fcoe_encap, vlan_tag_insert,
vlan_tag, loopback);
++num_sge;
space -= sge_len;
resid -= sge_len;
} while (space > 0 && num_sge <= USDF_MSG_MAX_SGE && resid > 0);
/* add packet lengths */
sent = ep->ep_domain->dom_fabric->fab_dev_attrs->uda_mtu -
sizeof(*hdr) - space;
hdr->hdr.uh_ip.tot_len = htons(
sent + sizeof(struct rudp_pkt) -
sizeof(struct ether_header));
hdr->hdr.uh_udp.len = htons(
(sizeof(struct rudp_pkt) -
sizeof(struct ether_header) -
sizeof(struct iphdr)) + sent);
#if 0
if ((random() % 177) == 0 && resid == 0) {
hdr->hdr.uh_eth.ether_type = 0;
//printf("BORK seq %u\n", ep->e.msg.ep_next_tx_seq);
}
#endif
if (resid == 0) {
hdr->msg.opcode = htons(RUDP_OP_LAST);
} else {
hdr->msg.opcode = htons(RUDP_OP_FIRST);
}
hdr->msg.m.rc_data.length = htons(sent);
hdr->msg.m.rc_data.seqno = htons(ep->e.msg.ep_next_tx_seq);
++ep->e.msg.ep_next_tx_seq;
wmb();
iowrite64(index, &vwq->ctrl->posted_index);
wq->uwq_next_desc = (struct wq_enet_desc *)
((uintptr_t)wq->uwq_desc_ring + (index << 4));
wq->uwq_post_index = (index + 1) & wq->uwq_post_index_mask;
wq->uwq_send_credits -= num_sge;
}
info = &wq->uwq_post_info[index];
info->wp_context = tx;
info->wp_len = sge_len;
/* If send complete, remove from send list */
if (resid == 0) {
usdf_msg_send_complete(ep, msg);
} else {
msg->ms_resid = resid;
msg->ms_iov_resid = cur_resid;
msg->ms_cur_iov = cur_iov;
msg->ms_cur_ptr = cur_ptr;
}
/* set ACK timer */
usdf_timer_set(ep->ep_domain->dom_fabric, ep->e.msg.ep_ack_timer,
USDF_RUDP_ACK_TIMEOUT);
}
