struct smc_llc_hdr {
struct smc_wr_rx_hdr common;
- u8 length; /* 44 */
-#if defined(__BIG_ENDIAN_BITFIELD)
- u8 reserved:4,
- add_link_rej_rsn:4;
+ union {
+ struct {
+ u8 length; /* 44 */
+ #if defined(__BIG_ENDIAN_BITFIELD)
+ u8 reserved:4,
+ add_link_rej_rsn:4;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
- u8 add_link_rej_rsn:4,
- reserved:4;
+ u8 add_link_rej_rsn:4,
+ reserved:4;
#endif
+ };
+ u16 length_v2; /* 44 - 8192*/
+ };
u8 flags;
-};
+} __packed; /* format defined in
+ * IBM Shared Memory Communications Version 2
+ * (https://www.ibm.com/support/pages/node/6326337)
+ */
#define SMC_LLC_FLAG_NO_RMBE_EYEC 0x03
__be64 rmb_vaddr_new;
};
+struct smc_llc_msg_add_link_v2_ext {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u8 v2_direct : 1,
+ reserved : 7;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 reserved : 7,
+ v2_direct : 1;
+#endif
+ u8 reserved2;
+ u8 client_target_gid[SMC_GID_SIZE];
+ u8 reserved3[8];
+ u16 num_rkeys;
+ struct smc_llc_msg_add_link_cont_rt rt[];
+} __packed; /* format defined in
+ * IBM Shared Memory Communications Version 2
+ * (https://www.ibm.com/support/pages/node/6326337)
+ */
+
+struct smc_llc_msg_req_add_link_v2 {
+ struct smc_llc_hdr hd;
+ u8 reserved[20];
+ u8 gid_cnt;
+ u8 reserved2[3];
+ u8 gid[][SMC_GID_SIZE];
+};
+
#define SMC_LLC_RKEYS_PER_CONT_MSG 2
struct smc_llc_msg_add_link_cont { /* type 0x03 */
__be64 rmb_vaddr;
} __packed; /* format defined in RFC7609 */
-#define SMC_LLC_RKEYS_PER_MSG 3
+#define SMC_LLC_RKEYS_PER_MSG 3
+#define SMC_LLC_RKEYS_PER_MSG_V2 255
struct smc_llc_msg_confirm_rkey { /* type 0x06 */
struct smc_llc_hdr hd;
u8 reserved2[4];
};
+struct smc_llc_msg_delete_rkey_v2 { /* type 0x29 */
+ struct smc_llc_hdr hd;
+ u8 num_rkeys;
+ u8 num_inval_rkeys;
+ u8 reserved[2];
+ __be32 rkey[];
+};
+
union smc_llc_msg {
struct smc_llc_msg_confirm_link confirm_link;
struct smc_llc_msg_add_link add_link;
+ struct smc_llc_msg_req_add_link_v2 req_add_link;
struct smc_llc_msg_add_link_cont add_link_cont;
struct smc_llc_msg_del_link delete_link;
static void smc_llc_flow_parallel(struct smc_link_group *lgr, u8 flow_type,
struct smc_llc_qentry *qentry)
{
- u8 msg_type = qentry->msg.raw.hdr.common.type;
+ u8 msg_type = qentry->msg.raw.hdr.common.llc_type;
if ((msg_type == SMC_LLC_ADD_LINK || msg_type == SMC_LLC_DELETE_LINK) &&
flow_type != msg_type && !lgr->delayed_event) {
spin_unlock_bh(&lgr->llc_flow_lock);
return false;
}
- switch (qentry->msg.raw.hdr.common.type) {
+ switch (qentry->msg.raw.hdr.common.llc_type) {
case SMC_LLC_ADD_LINK:
flow->type = SMC_LLC_FLOW_ADD_LINK;
break;
smc_llc_flow_qentry_del(flow);
goto out;
}
- rcv_msg = flow->qentry->msg.raw.hdr.common.type;
+ rcv_msg = flow->qentry->msg.raw.hdr.common.llc_type;
if (exp_msg && rcv_msg != exp_msg) {
if (exp_msg == SMC_LLC_ADD_LINK &&
rcv_msg == SMC_LLC_DELETE_LINK) {
return 0;
}
+static int smc_llc_add_pending_send_v2(struct smc_link *link,
+ struct smc_wr_v2_buf **wr_buf,
+ struct smc_wr_tx_pend_priv **pend)
+{
+ int rc;
+
+ rc = smc_wr_tx_get_v2_slot(link, smc_llc_tx_handler, wr_buf, pend);
+ if (rc < 0)
+ return rc;
+ return 0;
+}
+
+static void smc_llc_init_msg_hdr(struct smc_llc_hdr *hdr,
+ struct smc_link_group *lgr, size_t len)
+{
+ if (lgr->smc_version == SMC_V2) {
+ hdr->common.llc_version = SMC_V2;
+ hdr->length_v2 = len;
+ } else {
+ hdr->common.llc_version = 0;
+ hdr->length = len;
+ }
+}
+
/* high-level API to send LLC confirm link */
int smc_llc_send_confirm_link(struct smc_link *link,
enum smc_llc_reqresp reqresp)
goto put_out;
confllc = (struct smc_llc_msg_confirm_link *)wr_buf;
memset(confllc, 0, sizeof(*confllc));
- confllc->hd.common.type = SMC_LLC_CONFIRM_LINK;
- confllc->hd.length = sizeof(struct smc_llc_msg_confirm_link);
+ confllc->hd.common.llc_type = SMC_LLC_CONFIRM_LINK;
+ smc_llc_init_msg_hdr(&confllc->hd, link->lgr, sizeof(*confllc));
confllc->hd.flags |= SMC_LLC_FLAG_NO_RMBE_EYEC;
if (reqresp == SMC_LLC_RESP)
confllc->hd.flags |= SMC_LLC_FLAG_RESP;
goto put_out;
rkeyllc = (struct smc_llc_msg_confirm_rkey *)wr_buf;
memset(rkeyllc, 0, sizeof(*rkeyllc));
- rkeyllc->hd.common.type = SMC_LLC_CONFIRM_RKEY;
- rkeyllc->hd.length = sizeof(struct smc_llc_msg_confirm_rkey);
+ rkeyllc->hd.common.llc_type = SMC_LLC_CONFIRM_RKEY;
+ smc_llc_init_msg_hdr(&rkeyllc->hd, send_link->lgr, sizeof(*rkeyllc));
rtok_ix = 1;
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
goto put_out;
rkeyllc = (struct smc_llc_msg_delete_rkey *)wr_buf;
memset(rkeyllc, 0, sizeof(*rkeyllc));
- rkeyllc->hd.common.type = SMC_LLC_DELETE_RKEY;
- rkeyllc->hd.length = sizeof(struct smc_llc_msg_delete_rkey);
+ rkeyllc->hd.common.llc_type = SMC_LLC_DELETE_RKEY;
+ smc_llc_init_msg_hdr(&rkeyllc->hd, link->lgr, sizeof(*rkeyllc));
rkeyllc->num_rkeys = 1;
rkeyllc->rkey[0] = htonl(rmb_desc->mr_rx[link->link_idx]->rkey);
/* send llc message */
return rc;
}
+/* return first buffer from any of the next buf lists */
+static struct smc_buf_desc *_smc_llc_get_next_rmb(struct smc_link_group *lgr,
+ int *buf_lst)
+{
+ struct smc_buf_desc *buf_pos;
+
+ while (*buf_lst < SMC_RMBE_SIZES) {
+ buf_pos = list_first_entry_or_null(&lgr->rmbs[*buf_lst],
+ struct smc_buf_desc, list);
+ if (buf_pos)
+ return buf_pos;
+ (*buf_lst)++;
+ }
+ return NULL;
+}
+
+/* return next rmb from buffer lists */
+static struct smc_buf_desc *smc_llc_get_next_rmb(struct smc_link_group *lgr,
+ int *buf_lst,
+ struct smc_buf_desc *buf_pos)
+{
+ struct smc_buf_desc *buf_next;
+
+ if (!buf_pos || list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) {
+ (*buf_lst)++;
+ return _smc_llc_get_next_rmb(lgr, buf_lst);
+ }
+ buf_next = list_next_entry(buf_pos, list);
+ return buf_next;
+}
+
+static struct smc_buf_desc *smc_llc_get_first_rmb(struct smc_link_group *lgr,
+ int *buf_lst)
+{
+ *buf_lst = 0;
+ return smc_llc_get_next_rmb(lgr, buf_lst, NULL);
+}
+
+static int smc_llc_fill_ext_v2(struct smc_llc_msg_add_link_v2_ext *ext,
+ struct smc_link *link, struct smc_link *link_new)
+{
+ struct smc_link_group *lgr = link->lgr;
+ struct smc_buf_desc *buf_pos;
+ int prim_lnk_idx, lnk_idx, i;
+ struct smc_buf_desc *rmb;
+ int len = sizeof(*ext);
+ int buf_lst;
+
+ ext->v2_direct = !lgr->uses_gateway;
+ memcpy(ext->client_target_gid, link_new->gid, SMC_GID_SIZE);
+
+ prim_lnk_idx = link->link_idx;
+ lnk_idx = link_new->link_idx;
+ mutex_lock(&lgr->rmbs_lock);
+ ext->num_rkeys = lgr->conns_num;
+ if (!ext->num_rkeys)
+ goto out;
+ buf_pos = smc_llc_get_first_rmb(lgr, &buf_lst);
+ for (i = 0; i < ext->num_rkeys; i++) {
+ if (!buf_pos)
+ break;
+ rmb = buf_pos;
+ ext->rt[i].rmb_key = htonl(rmb->mr_rx[prim_lnk_idx]->rkey);
+ ext->rt[i].rmb_key_new = htonl(rmb->mr_rx[lnk_idx]->rkey);
+ ext->rt[i].rmb_vaddr_new =
+ cpu_to_be64((u64)sg_dma_address(rmb->sgt[lnk_idx].sgl));
+ buf_pos = smc_llc_get_next_rmb(lgr, &buf_lst, buf_pos);
+ while (buf_pos && !(buf_pos)->used)
+ buf_pos = smc_llc_get_next_rmb(lgr, &buf_lst, buf_pos);
+ }
+ len += i * sizeof(ext->rt[0]);
+out:
+ mutex_unlock(&lgr->rmbs_lock);
+ return len;
+}
+
/* send ADD LINK request or response */
int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
struct smc_link *link_new,
enum smc_llc_reqresp reqresp)
{
+ struct smc_llc_msg_add_link_v2_ext *ext = NULL;
struct smc_llc_msg_add_link *addllc;
struct smc_wr_tx_pend_priv *pend;
- struct smc_wr_buf *wr_buf;
+ int len = sizeof(*addllc);
int rc;
if (!smc_wr_tx_link_hold(link))
return -ENOLINK;
- rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
- if (rc)
- goto put_out;
- addllc = (struct smc_llc_msg_add_link *)wr_buf;
+ if (link->lgr->smc_version == SMC_V2) {
+ struct smc_wr_v2_buf *wr_buf;
+
+ rc = smc_llc_add_pending_send_v2(link, &wr_buf, &pend);
+ if (rc)
+ goto put_out;
+ addllc = (struct smc_llc_msg_add_link *)wr_buf;
+ ext = (struct smc_llc_msg_add_link_v2_ext *)
+ &wr_buf->raw[sizeof(*addllc)];
+ memset(ext, 0, SMC_WR_TX_SIZE);
+ } else {
+ struct smc_wr_buf *wr_buf;
+
+ rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
+ if (rc)
+ goto put_out;
+ addllc = (struct smc_llc_msg_add_link *)wr_buf;
+ }
memset(addllc, 0, sizeof(*addllc));
- addllc->hd.common.type = SMC_LLC_ADD_LINK;
- addllc->hd.length = sizeof(struct smc_llc_msg_add_link);
+ addllc->hd.common.llc_type = SMC_LLC_ADD_LINK;
if (reqresp == SMC_LLC_RESP)
addllc->hd.flags |= SMC_LLC_FLAG_RESP;
memcpy(addllc->sender_mac, mac, ETH_ALEN);
addllc->qp_mtu = min(link_new->path_mtu,
link_new->peer_mtu);
}
+ if (ext && link_new)
+ len += smc_llc_fill_ext_v2(ext, link, link_new);
+ smc_llc_init_msg_hdr(&addllc->hd, link->lgr, len);
/* send llc message */
- rc = smc_wr_tx_send(link, pend);
+ if (link->lgr->smc_version == SMC_V2)
+ rc = smc_wr_tx_v2_send(link, pend, len);
+ else
+ rc = smc_wr_tx_send(link, pend);
put_out:
smc_wr_tx_link_put(link);
return rc;
delllc = (struct smc_llc_msg_del_link *)wr_buf;
memset(delllc, 0, sizeof(*delllc));
- delllc->hd.common.type = SMC_LLC_DELETE_LINK;
- delllc->hd.length = sizeof(struct smc_llc_msg_del_link);
+ delllc->hd.common.llc_type = SMC_LLC_DELETE_LINK;
+ smc_llc_init_msg_hdr(&delllc->hd, link->lgr, sizeof(*delllc));
if (reqresp == SMC_LLC_RESP)
delllc->hd.flags |= SMC_LLC_FLAG_RESP;
if (orderly)
goto put_out;
testllc = (struct smc_llc_msg_test_link *)wr_buf;
memset(testllc, 0, sizeof(*testllc));
- testllc->hd.common.type = SMC_LLC_TEST_LINK;
- testllc->hd.length = sizeof(struct smc_llc_msg_test_link);
+ testllc->hd.common.llc_type = SMC_LLC_TEST_LINK;
+ smc_llc_init_msg_hdr(&testllc->hd, link->lgr, sizeof(*testllc));
memcpy(testllc->user_data, user_data, sizeof(testllc->user_data));
/* send llc message */
rc = smc_wr_tx_send(link, pend);
return -EMLINK;
}
-/* return first buffer from any of the next buf lists */
-static struct smc_buf_desc *_smc_llc_get_next_rmb(struct smc_link_group *lgr,
- int *buf_lst)
-{
- struct smc_buf_desc *buf_pos;
-
- while (*buf_lst < SMC_RMBE_SIZES) {
- buf_pos = list_first_entry_or_null(&lgr->rmbs[*buf_lst],
- struct smc_buf_desc, list);
- if (buf_pos)
- return buf_pos;
- (*buf_lst)++;
- }
- return NULL;
-}
-
-/* return next rmb from buffer lists */
-static struct smc_buf_desc *smc_llc_get_next_rmb(struct smc_link_group *lgr,
- int *buf_lst,
- struct smc_buf_desc *buf_pos)
-{
- struct smc_buf_desc *buf_next;
-
- if (!buf_pos || list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) {
- (*buf_lst)++;
- return _smc_llc_get_next_rmb(lgr, buf_lst);
- }
- buf_next = list_next_entry(buf_pos, list);
- return buf_next;
-}
-
-static struct smc_buf_desc *smc_llc_get_first_rmb(struct smc_link_group *lgr,
- int *buf_lst)
-{
- *buf_lst = 0;
- return smc_llc_get_next_rmb(lgr, buf_lst, NULL);
-}
-
/* send one add_link_continue msg */
static int smc_llc_add_link_cont(struct smc_link *link,
struct smc_link *link_new, u8 *num_rkeys_todo,
while (*buf_pos && !(*buf_pos)->used)
*buf_pos = smc_llc_get_next_rmb(lgr, buf_lst, *buf_pos);
}
- addc_llc->hd.common.type = SMC_LLC_ADD_LINK_CONT;
+ addc_llc->hd.common.llc_type = SMC_LLC_ADD_LINK_CONT;
addc_llc->hd.length = sizeof(struct smc_llc_msg_add_link_cont);
if (lgr->role == SMC_CLNT)
addc_llc->hd.flags |= SMC_LLC_FLAG_RESP;
qentry->msg.raw.hdr.flags |= SMC_LLC_FLAG_RESP;
qentry->msg.raw.hdr.flags |= SMC_LLC_FLAG_ADD_LNK_REJ;
qentry->msg.raw.hdr.add_link_rej_rsn = SMC_LLC_REJ_RSN_NO_ALT_PATH;
+ smc_llc_init_msg_hdr(&qentry->msg.raw.hdr, qentry->link->lgr,
+ sizeof(qentry->msg));
return smc_llc_send_message(qentry->link, &qentry->msg);
}
SMC_LLC_DEL_LOST_PATH);
return -ENOLINK;
}
- if (qentry->msg.raw.hdr.common.type != SMC_LLC_CONFIRM_LINK) {
+ if (qentry->msg.raw.hdr.common.llc_type != SMC_LLC_CONFIRM_LINK) {
/* received DELETE_LINK instead */
qentry->msg.raw.hdr.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, &qentry->msg);
return 0;
}
+static void smc_llc_save_add_link_rkeys(struct smc_link *link,
+ struct smc_link *link_new)
+{
+ struct smc_llc_msg_add_link_v2_ext *ext;
+ struct smc_link_group *lgr = link->lgr;
+ int max, i;
+
+ ext = (struct smc_llc_msg_add_link_v2_ext *)((u8 *)lgr->wr_rx_buf_v2 +
+ SMC_WR_TX_SIZE);
+ max = min_t(u8, ext->num_rkeys, SMC_LLC_RKEYS_PER_MSG_V2);
+ mutex_lock(&lgr->rmbs_lock);
+ for (i = 0; i < max; i++) {
+ smc_rtoken_set(lgr, link->link_idx, link_new->link_idx,
+ ext->rt[i].rmb_key,
+ ext->rt[i].rmb_vaddr_new,
+ ext->rt[i].rmb_key_new);
+ }
+ mutex_unlock(&lgr->rmbs_lock);
+}
+
static void smc_llc_save_add_link_info(struct smc_link *link,
struct smc_llc_msg_add_link *add_llc)
{
}
ini->vlan_id = lgr->vlan_id;
+ if (lgr->smc_version == SMC_V2) {
+ ini->check_smcrv2 = true;
+ ini->smcrv2.saddr = lgr->saddr;
+ ini->smcrv2.daddr = smc_ib_gid_to_ipv4(llc->sender_gid);
+ }
smc_pnet_find_alt_roce(lgr, ini, link->smcibdev);
if (!memcmp(llc->sender_gid, link->peer_gid, SMC_GID_SIZE) &&
- !memcmp(llc->sender_mac, link->peer_mac, ETH_ALEN)) {
- if (!ini->ib_dev)
+ (lgr->smc_version == SMC_V2 ||
+ !memcmp(llc->sender_mac, link->peer_mac, ETH_ALEN))) {
+ if (!ini->ib_dev && !ini->smcrv2.ib_dev_v2)
goto out_reject;
lgr_new_t = SMC_LGR_ASYMMETRIC_PEER;
}
- if (!ini->ib_dev) {
+ if (lgr->smc_version == SMC_V2 && !ini->smcrv2.ib_dev_v2) {
+ lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
+ ini->smcrv2.ib_dev_v2 = link->smcibdev;
+ ini->smcrv2.ib_port_v2 = link->ibport;
+ } else if (lgr->smc_version < SMC_V2 && !ini->ib_dev) {
lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
ini->ib_dev = link->smcibdev;
ini->ib_port = link->ibport;
goto out_clear_lnk;
rc = smc_llc_send_add_link(link,
- lnk_new->smcibdev->mac[ini->ib_port - 1],
+ lnk_new->smcibdev->mac[lnk_new->ibport - 1],
lnk_new->gid, lnk_new, SMC_LLC_RESP);
if (rc)
goto out_clear_lnk;
- rc = smc_llc_cli_rkey_exchange(link, lnk_new);
- if (rc) {
- rc = 0;
- goto out_clear_lnk;
+ if (lgr->smc_version == SMC_V2) {
+ smc_llc_save_add_link_rkeys(link, lnk_new);
+ } else {
+ rc = smc_llc_cli_rkey_exchange(link, lnk_new);
+ if (rc) {
+ rc = 0;
+ goto out_clear_lnk;
+ }
}
rc = smc_llc_cli_conf_link(link, ini, lnk_new, lgr_new_t);
if (!rc)
return rc;
}
+static void smc_llc_send_request_add_link(struct smc_link *link)
+{
+ struct smc_llc_msg_req_add_link_v2 *llc;
+ struct smc_wr_tx_pend_priv *pend;
+ struct smc_wr_v2_buf *wr_buf;
+ struct smc_gidlist gidlist;
+ int rc, len, i;
+
+ if (!smc_wr_tx_link_hold(link))
+ return;
+ if (link->lgr->type == SMC_LGR_SYMMETRIC ||
+ link->lgr->type == SMC_LGR_ASYMMETRIC_PEER)
+ goto put_out;
+
+ smc_fill_gid_list(link->lgr, &gidlist, link->smcibdev, link->gid);
+ if (gidlist.len <= 1)
+ goto put_out;
+
+ rc = smc_llc_add_pending_send_v2(link, &wr_buf, &pend);
+ if (rc)
+ goto put_out;
+ llc = (struct smc_llc_msg_req_add_link_v2 *)wr_buf;
+ memset(llc, 0, SMC_WR_TX_SIZE);
+
+ llc->hd.common.llc_type = SMC_LLC_REQ_ADD_LINK;
+ for (i = 0; i < gidlist.len; i++)
+ memcpy(llc->gid[i], gidlist.list[i], sizeof(gidlist.list[0]));
+ llc->gid_cnt = gidlist.len;
+ len = sizeof(*llc) + (gidlist.len * sizeof(gidlist.list[0]));
+ smc_llc_init_msg_hdr(&llc->hd, link->lgr, len);
+ rc = smc_wr_tx_v2_send(link, pend, len);
+ if (!rc)
+ /* set REQ_ADD_LINK flow and wait for response from peer */
+ link->lgr->llc_flow_lcl.type = SMC_LLC_FLOW_REQ_ADD_LINK;
+put_out:
+ smc_wr_tx_link_put(link);
+}
+
/* as an SMC client, invite server to start the add_link processing */
static void smc_llc_cli_add_link_invite(struct smc_link *link,
struct smc_llc_qentry *qentry)
struct smc_link_group *lgr = smc_get_lgr(link);
struct smc_init_info *ini = NULL;
+ if (lgr->smc_version == SMC_V2) {
+ smc_llc_send_request_add_link(link);
+ goto out;
+ }
+
if (lgr->type == SMC_LGR_SYMMETRIC ||
lgr->type == SMC_LGR_ASYMMETRIC_PEER)
goto out;
static bool smc_llc_is_local_add_link(union smc_llc_msg *llc)
{
- if (llc->raw.hdr.common.type == SMC_LLC_ADD_LINK &&
+ if (llc->raw.hdr.common.llc_type == SMC_LLC_ADD_LINK &&
smc_llc_is_empty_llc_message(llc))
return true;
return false;
/* receive CONFIRM LINK response over the RoCE fabric */
qentry = smc_llc_wait(lgr, link, SMC_LLC_WAIT_FIRST_TIME, 0);
if (!qentry ||
- qentry->msg.raw.hdr.common.type != SMC_LLC_CONFIRM_LINK) {
+ qentry->msg.raw.hdr.common.llc_type != SMC_LLC_CONFIRM_LINK) {
/* send DELETE LINK */
smc_llc_send_delete_link(link, link_new->link_id, SMC_LLC_REQ,
false, SMC_LLC_DEL_LOST_PATH);
return 0;
}
-int smc_llc_srv_add_link(struct smc_link *link)
+static void smc_llc_send_req_add_link_response(struct smc_llc_qentry *qentry)
+{
+ qentry->msg.raw.hdr.flags |= SMC_LLC_FLAG_RESP;
+ smc_llc_init_msg_hdr(&qentry->msg.raw.hdr, qentry->link->lgr,
+ sizeof(qentry->msg));
+ memset(&qentry->msg.raw.data, 0, sizeof(qentry->msg.raw.data));
+ smc_llc_send_message(qentry->link, &qentry->msg);
+}
+
+int smc_llc_srv_add_link(struct smc_link *link,
+ struct smc_llc_qentry *req_qentry)
{
enum smc_lgr_type lgr_new_t = SMC_LGR_SYMMETRIC;
struct smc_link_group *lgr = link->lgr;
struct smc_llc_msg_add_link *add_llc;
struct smc_llc_qentry *qentry = NULL;
+ bool send_req_add_link_resp = false;
struct smc_link *link_new = NULL;
- struct smc_init_info *ini;
+ struct smc_init_info *ini = NULL;
int lnk_idx, rc = 0;
+ if (req_qentry &&
+ req_qentry->msg.raw.hdr.common.llc_type == SMC_LLC_REQ_ADD_LINK)
+ send_req_add_link_resp = true;
+
ini = kzalloc(sizeof(*ini), GFP_KERNEL);
- if (!ini)
- return -ENOMEM;
+ if (!ini) {
+ rc = -ENOMEM;
+ goto out;
+ }
/* ignore client add link recommendation, start new flow */
ini->vlan_id = lgr->vlan_id;
+ if (lgr->smc_version == SMC_V2) {
+ ini->check_smcrv2 = true;
+ ini->smcrv2.saddr = lgr->saddr;
+ if (send_req_add_link_resp) {
+ struct smc_llc_msg_req_add_link_v2 *req_add =
+ &req_qentry->msg.req_add_link;
+
+ ini->smcrv2.daddr = smc_ib_gid_to_ipv4(req_add->gid[0]);
+ }
+ }
smc_pnet_find_alt_roce(lgr, ini, link->smcibdev);
- if (!ini->ib_dev) {
+ if (lgr->smc_version == SMC_V2 && !ini->smcrv2.ib_dev_v2) {
+ lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
+ ini->smcrv2.ib_dev_v2 = link->smcibdev;
+ ini->smcrv2.ib_port_v2 = link->ibport;
+ } else if (lgr->smc_version < SMC_V2 && !ini->ib_dev) {
lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
ini->ib_dev = link->smcibdev;
ini->ib_port = link->ibport;
if (rc)
goto out;
link_new = &lgr->lnk[lnk_idx];
+
+ rc = smcr_buf_map_lgr(link_new);
+ if (rc)
+ goto out_err;
+
rc = smc_llc_send_add_link(link,
- link_new->smcibdev->mac[ini->ib_port - 1],
+ link_new->smcibdev->mac[link_new->ibport-1],
link_new->gid, link_new, SMC_LLC_REQ);
if (rc)
goto out_err;
+ send_req_add_link_resp = false;
/* receive ADD LINK response over the RoCE fabric */
qentry = smc_llc_wait(lgr, link, SMC_LLC_WAIT_TIME, SMC_LLC_ADD_LINK);
if (!qentry) {
}
if (lgr->type == SMC_LGR_SINGLE &&
(!memcmp(add_llc->sender_gid, link->peer_gid, SMC_GID_SIZE) &&
- !memcmp(add_llc->sender_mac, link->peer_mac, ETH_ALEN))) {
+ (lgr->smc_version == SMC_V2 ||
+ !memcmp(add_llc->sender_mac, link->peer_mac, ETH_ALEN)))) {
lgr_new_t = SMC_LGR_ASYMMETRIC_PEER;
}
smc_llc_save_add_link_info(link_new, add_llc);
smc_llc_flow_qentry_del(&lgr->llc_flow_lcl);
rc = smc_ib_ready_link(link_new);
- if (rc)
- goto out_err;
- rc = smcr_buf_map_lgr(link_new);
if (rc)
goto out_err;
rc = smcr_buf_reg_lgr(link_new);
if (rc)
goto out_err;
- rc = smc_llc_srv_rkey_exchange(link, link_new);
- if (rc)
- goto out_err;
+ if (lgr->smc_version == SMC_V2) {
+ smc_llc_save_add_link_rkeys(link, link_new);
+ } else {
+ rc = smc_llc_srv_rkey_exchange(link, link_new);
+ if (rc)
+ goto out_err;
+ }
rc = smc_llc_srv_conf_link(link, link_new, lgr_new_t);
if (rc)
goto out_err;
}
out:
kfree(ini);
+ if (send_req_add_link_resp)
+ smc_llc_send_req_add_link_response(req_qentry);
return rc;
}
static void smc_llc_process_srv_add_link(struct smc_link_group *lgr)
{
struct smc_link *link = lgr->llc_flow_lcl.qentry->link;
+ struct smc_llc_qentry *qentry;
int rc;
- smc_llc_flow_qentry_del(&lgr->llc_flow_lcl);
+ qentry = smc_llc_flow_qentry_clr(&lgr->llc_flow_lcl);
mutex_lock(&lgr->llc_conf_mutex);
- rc = smc_llc_srv_add_link(link);
+ rc = smc_llc_srv_add_link(link, qentry);
if (!rc && lgr->type == SMC_LGR_SYMMETRIC) {
/* delete any asymmetric link */
smc_llc_delete_asym_link(lgr);
}
mutex_unlock(&lgr->llc_conf_mutex);
+ kfree(qentry);
}
/* enqueue a local add_link req to trigger a new add_link flow */
{
struct smc_llc_msg_add_link add_llc = {};
- add_llc.hd.length = sizeof(add_llc);
- add_llc.hd.common.type = SMC_LLC_ADD_LINK;
+ add_llc.hd.common.llc_type = SMC_LLC_ADD_LINK;
+ smc_llc_init_msg_hdr(&add_llc.hd, link->lgr, sizeof(add_llc));
/* no dev and port needed */
smc_llc_enqueue(link, (union smc_llc_msg *)&add_llc);
}
else
smc_llc_process_srv_add_link(lgr);
out:
- smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);
+ if (lgr->llc_flow_lcl.type != SMC_LLC_FLOW_REQ_ADD_LINK)
+ smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);
}
/* enqueue a local del_link msg to trigger a new del_link flow,
{
struct smc_llc_msg_del_link del_llc = {};
- del_llc.hd.length = sizeof(del_llc);
- del_llc.hd.common.type = SMC_LLC_DELETE_LINK;
+ del_llc.hd.common.llc_type = SMC_LLC_DELETE_LINK;
+ smc_llc_init_msg_hdr(&del_llc.hd, link->lgr, sizeof(del_llc));
del_llc.link_num = del_link_id;
del_llc.reason = htonl(SMC_LLC_DEL_LOST_PATH);
del_llc.hd.flags |= SMC_LLC_FLAG_DEL_LINK_ORDERLY;
struct smc_llc_msg_del_link delllc = {};
int i;
- delllc.hd.common.type = SMC_LLC_DELETE_LINK;
- delllc.hd.length = sizeof(delllc);
+ delllc.hd.common.llc_type = SMC_LLC_DELETE_LINK;
+ smc_llc_init_msg_hdr(&delllc.hd, lgr, sizeof(delllc));
if (ord)
delllc.hd.flags |= SMC_LLC_FLAG_DEL_LINK_ORDERLY;
delllc.hd.flags |= SMC_LLC_FLAG_DEL_LINK_ALL;
link = qentry->link;
num_entries = llc->rtoken[0].num_rkeys;
+ if (num_entries > SMC_LLC_RKEYS_PER_MSG)
+ goto out_err;
/* first rkey entry is for receiving link */
rk_idx = smc_rtoken_add(link,
llc->rtoken[0].rmb_vaddr,
llc->hd.flags |= SMC_LLC_FLAG_RKEY_RETRY;
out:
llc->hd.flags |= SMC_LLC_FLAG_RESP;
+ smc_llc_init_msg_hdr(&llc->hd, link->lgr, sizeof(*llc));
smc_llc_send_message(link, &qentry->msg);
smc_llc_flow_qentry_del(&lgr->llc_flow_rmt);
}
llc = &qentry->msg.delete_rkey;
link = qentry->link;
+ if (lgr->smc_version == SMC_V2) {
+ struct smc_llc_msg_delete_rkey_v2 *llcv2;
+
+ memcpy(lgr->wr_rx_buf_v2, llc, sizeof(*llc));
+ llcv2 = (struct smc_llc_msg_delete_rkey_v2 *)lgr->wr_rx_buf_v2;
+ llcv2->num_inval_rkeys = 0;
+
+ max = min_t(u8, llcv2->num_rkeys, SMC_LLC_RKEYS_PER_MSG_V2);
+ for (i = 0; i < max; i++) {
+ if (smc_rtoken_delete(link, llcv2->rkey[i]))
+ llcv2->num_inval_rkeys++;
+ }
+ memset(&llc->rkey[0], 0, sizeof(llc->rkey));
+ memset(&llc->reserved2, 0, sizeof(llc->reserved2));
+ smc_llc_init_msg_hdr(&llc->hd, link->lgr, sizeof(*llc));
+ if (llcv2->num_inval_rkeys) {
+ llc->hd.flags |= SMC_LLC_FLAG_RKEY_NEG;
+ llc->err_mask = llcv2->num_inval_rkeys;
+ }
+ goto finish;
+ }
+
max = min_t(u8, llc->num_rkeys, SMC_LLC_DEL_RKEY_MAX);
for (i = 0; i < max; i++) {
if (smc_rtoken_delete(link, llc->rkey[i]))
llc->hd.flags |= SMC_LLC_FLAG_RKEY_NEG;
llc->err_mask = err_mask;
}
+finish:
llc->hd.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, &qentry->msg);
smc_llc_flow_qentry_del(&lgr->llc_flow_rmt);
if (!smc_link_usable(link))
goto out;
- switch (llc->raw.hdr.common.type) {
+ switch (llc->raw.hdr.common.llc_type) {
case SMC_LLC_TEST_LINK:
llc->test_link.hd.flags |= SMC_LLC_FLAG_RESP;
smc_llc_send_message(link, llc);
smc_llc_flow_qentry_set(&lgr->llc_flow_lcl,
qentry);
wake_up(&lgr->llc_msg_waiter);
- } else if (smc_llc_flow_start(&lgr->llc_flow_lcl,
- qentry)) {
+ return;
+ }
+ if (lgr->llc_flow_lcl.type ==
+ SMC_LLC_FLOW_REQ_ADD_LINK) {
+ /* server started add_link processing */
+ lgr->llc_flow_lcl.type = SMC_LLC_FLOW_ADD_LINK;
+ smc_llc_flow_qentry_set(&lgr->llc_flow_lcl,
+ qentry);
+ schedule_work(&lgr->llc_add_link_work);
+ return;
+ }
+ if (smc_llc_flow_start(&lgr->llc_flow_lcl, qentry)) {
schedule_work(&lgr->llc_add_link_work);
}
} else if (smc_llc_flow_start(&lgr->llc_flow_lcl, qentry)) {
smc_llc_flow_stop(lgr, &lgr->llc_flow_rmt);
}
return;
+ case SMC_LLC_REQ_ADD_LINK:
+ /* handle response here, smc_llc_flow_stop() cannot be called
+ * in tasklet context
+ */
+ if (lgr->role == SMC_CLNT &&
+ lgr->llc_flow_lcl.type == SMC_LLC_FLOW_REQ_ADD_LINK &&
+ (llc->raw.hdr.flags & SMC_LLC_FLAG_RESP)) {
+ smc_llc_flow_stop(link->lgr, &lgr->llc_flow_lcl);
+ } else if (lgr->role == SMC_SERV) {
+ if (smc_llc_flow_start(&lgr->llc_flow_lcl, qentry)) {
+ /* as smc server, handle client suggestion */
+ lgr->llc_flow_lcl.type = SMC_LLC_FLOW_ADD_LINK;
+ schedule_work(&lgr->llc_add_link_work);
+ }
+ return;
+ }
+ break;
default:
smc_llc_protocol_violation(lgr, llc->raw.hdr.common.type);
break;
{
enum smc_llc_flowtype flowtype = link->lgr->llc_flow_lcl.type;
struct smc_llc_flow *flow = &link->lgr->llc_flow_lcl;
- u8 llc_type = qentry->msg.raw.hdr.common.type;
+ u8 llc_type = qentry->msg.raw.hdr.common.llc_type;
switch (llc_type) {
case SMC_LLC_TEST_LINK:
/* not used because max links is 3 */
break;
default:
- smc_llc_protocol_violation(link->lgr, llc_type);
+ smc_llc_protocol_violation(link->lgr,
+ qentry->msg.raw.hdr.common.type);
break;
}
kfree(qentry);
memcpy(&qentry->msg, llc, sizeof(union smc_llc_msg));
/* process responses immediately */
- if (llc->raw.hdr.flags & SMC_LLC_FLAG_RESP) {
+ if ((llc->raw.hdr.flags & SMC_LLC_FLAG_RESP) &&
+ llc->raw.hdr.common.llc_type != SMC_LLC_REQ_ADD_LINK) {
smc_llc_rx_response(link, qentry);
return;
}
if (wc->byte_len < sizeof(*llc))
return; /* short message */
- if (llc->raw.hdr.length != sizeof(*llc))
- return; /* invalid message */
+ if (!llc->raw.hdr.common.llc_version) {
+ if (llc->raw.hdr.length != sizeof(*llc))
+ return; /* invalid message */
+ } else {
+ if (llc->raw.hdr.length_v2 < sizeof(*llc))
+ return; /* invalid message */
+ }
smc_llc_enqueue(link, llc);
}
.handler = smc_llc_rx_handler,
.type = SMC_LLC_DELETE_RKEY
},
+ /* V2 types */
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_CONFIRM_LINK_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_TEST_LINK_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_ADD_LINK_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_DELETE_LINK_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_REQ_ADD_LINK_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_CONFIRM_RKEY_V2
+ },
+ {
+ .handler = smc_llc_rx_handler,
+ .type = SMC_LLC_DELETE_RKEY_V2
+ },
{
.handler = NULL,
}
projects / users / hch / xfs.git / commitdiff