net/smc: introduce better field names
Field names "srv_first_contact" and "cln_first_contact" are misleading, since they apply to both, server and client. Rename them to "first_contact_peer" and "first_contact_local". Rename "ism_gid" by the more precise name "ism_peer_gid". Rename version constant "SMC_CLC_V1" into "SMC_V1". No functional change. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
a60a2b1e0a
commit
5ac54d8768
|
@ -523,11 +523,11 @@ static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code)
|
|||
|
||||
/* abort connecting */
|
||||
static int smc_connect_abort(struct smc_sock *smc, int reason_code,
|
||||
int local_contact)
|
||||
int local_first)
|
||||
{
|
||||
bool is_smcd = smc->conn.lgr->is_smcd;
|
||||
|
||||
if (local_contact == SMC_FIRST_CONTACT)
|
||||
if (local_first)
|
||||
smc_lgr_cleanup_early(&smc->conn);
|
||||
else
|
||||
smc_conn_free(&smc->conn);
|
||||
|
@ -615,7 +615,7 @@ static int smc_connect_rdma(struct smc_sock *smc,
|
|||
ini->is_smcd = false;
|
||||
ini->ib_lcl = &aclc->lcl;
|
||||
ini->ib_clcqpn = ntoh24(aclc->qpn);
|
||||
ini->srv_first_contact = aclc->hdr.flag;
|
||||
ini->first_contact_peer = aclc->hdr.flag;
|
||||
|
||||
mutex_lock(&smc_client_lgr_pending);
|
||||
reason_code = smc_conn_create(smc, ini);
|
||||
|
@ -626,7 +626,7 @@ static int smc_connect_rdma(struct smc_sock *smc,
|
|||
|
||||
smc_conn_save_peer_info(smc, aclc);
|
||||
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT) {
|
||||
if (ini->first_contact_local) {
|
||||
link = smc->conn.lnk;
|
||||
} else {
|
||||
/* set link that was assigned by server */
|
||||
|
@ -643,51 +643,51 @@ static int smc_connect_rdma(struct smc_sock *smc,
|
|||
}
|
||||
if (!link)
|
||||
return smc_connect_abort(smc, SMC_CLC_DECL_NOSRVLINK,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
smc->conn.lnk = link;
|
||||
}
|
||||
|
||||
/* create send buffer and rmb */
|
||||
if (smc_buf_create(smc, false))
|
||||
return smc_connect_abort(smc, SMC_CLC_DECL_MEM,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT)
|
||||
if (ini->first_contact_local)
|
||||
smc_link_save_peer_info(link, aclc);
|
||||
|
||||
if (smc_rmb_rtoken_handling(&smc->conn, link, aclc))
|
||||
return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RTOK,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
|
||||
smc_close_init(smc);
|
||||
smc_rx_init(smc);
|
||||
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT) {
|
||||
if (ini->first_contact_local) {
|
||||
if (smc_ib_ready_link(link))
|
||||
return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RDYLNK,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
} else {
|
||||
if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc))
|
||||
return smc_connect_abort(smc, SMC_CLC_DECL_ERR_REGRMB,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
}
|
||||
smc_rmb_sync_sg_for_device(&smc->conn);
|
||||
|
||||
reason_code = smc_clc_send_confirm(smc);
|
||||
if (reason_code)
|
||||
return smc_connect_abort(smc, reason_code,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
|
||||
smc_tx_init(smc);
|
||||
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT) {
|
||||
if (ini->first_contact_local) {
|
||||
/* QP confirmation over RoCE fabric */
|
||||
smc_llc_flow_initiate(link->lgr, SMC_LLC_FLOW_ADD_LINK);
|
||||
reason_code = smcr_clnt_conf_first_link(smc);
|
||||
smc_llc_flow_stop(link->lgr, &link->lgr->llc_flow_lcl);
|
||||
if (reason_code)
|
||||
return smc_connect_abort(smc, reason_code,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
}
|
||||
mutex_unlock(&smc_client_lgr_pending);
|
||||
|
||||
|
@ -707,8 +707,8 @@ static int smc_connect_ism(struct smc_sock *smc,
|
|||
int rc = 0;
|
||||
|
||||
ini->is_smcd = true;
|
||||
ini->ism_gid = aclc->gid;
|
||||
ini->srv_first_contact = aclc->hdr.flag;
|
||||
ini->ism_peer_gid = aclc->gid;
|
||||
ini->first_contact_peer = aclc->hdr.flag;
|
||||
|
||||
/* there is only one lgr role for SMC-D; use server lock */
|
||||
mutex_lock(&smc_server_lgr_pending);
|
||||
|
@ -724,7 +724,7 @@ static int smc_connect_ism(struct smc_sock *smc,
|
|||
return smc_connect_abort(smc, (rc == -ENOSPC) ?
|
||||
SMC_CLC_DECL_MAX_DMB :
|
||||
SMC_CLC_DECL_MEM,
|
||||
ini->cln_first_contact);
|
||||
ini->first_contact_local);
|
||||
|
||||
smc_conn_save_peer_info(smc, aclc);
|
||||
smc_close_init(smc);
|
||||
|
@ -733,7 +733,7 @@ static int smc_connect_ism(struct smc_sock *smc,
|
|||
|
||||
rc = smc_clc_send_confirm(smc);
|
||||
if (rc)
|
||||
return smc_connect_abort(smc, rc, ini->cln_first_contact);
|
||||
return smc_connect_abort(smc, rc, ini->first_contact_local);
|
||||
mutex_unlock(&smc_server_lgr_pending);
|
||||
|
||||
smc_copy_sock_settings_to_clc(smc);
|
||||
|
@ -1127,10 +1127,10 @@ static void smc_listen_out_err(struct smc_sock *new_smc)
|
|||
|
||||
/* listen worker: decline and fall back if possible */
|
||||
static void smc_listen_decline(struct smc_sock *new_smc, int reason_code,
|
||||
int local_contact)
|
||||
bool local_first)
|
||||
{
|
||||
/* RDMA setup failed, switch back to TCP */
|
||||
if (local_contact == SMC_FIRST_CONTACT)
|
||||
if (local_first)
|
||||
smc_lgr_cleanup_early(&new_smc->conn);
|
||||
else
|
||||
smc_conn_free(&new_smc->conn);
|
||||
|
@ -1190,7 +1190,7 @@ static int smc_listen_ism_init(struct smc_sock *new_smc,
|
|||
int rc;
|
||||
|
||||
pclc_smcd = smc_get_clc_msg_smcd(pclc);
|
||||
ini->ism_gid = pclc_smcd->gid;
|
||||
ini->ism_peer_gid = pclc_smcd->gid;
|
||||
rc = smc_conn_create(new_smc, ini);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
@ -1199,7 +1199,7 @@ static int smc_listen_ism_init(struct smc_sock *new_smc,
|
|||
if (smc_ism_cantalk(new_smc->conn.lgr->peer_gid,
|
||||
new_smc->conn.lgr->vlan_id,
|
||||
new_smc->conn.lgr->smcd)) {
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT)
|
||||
if (ini->first_contact_local)
|
||||
smc_lgr_cleanup_early(&new_smc->conn);
|
||||
else
|
||||
smc_conn_free(&new_smc->conn);
|
||||
|
@ -1209,7 +1209,7 @@ static int smc_listen_ism_init(struct smc_sock *new_smc,
|
|||
/* Create send and receive buffers */
|
||||
rc = smc_buf_create(new_smc, true);
|
||||
if (rc) {
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT)
|
||||
if (ini->first_contact_local)
|
||||
smc_lgr_cleanup_early(&new_smc->conn);
|
||||
else
|
||||
smc_conn_free(&new_smc->conn);
|
||||
|
@ -1221,11 +1221,11 @@ static int smc_listen_ism_init(struct smc_sock *new_smc,
|
|||
}
|
||||
|
||||
/* listen worker: register buffers */
|
||||
static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)
|
||||
static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first)
|
||||
{
|
||||
struct smc_connection *conn = &new_smc->conn;
|
||||
|
||||
if (local_contact != SMC_FIRST_CONTACT) {
|
||||
if (!local_first) {
|
||||
if (smcr_lgr_reg_rmbs(conn->lnk, conn->rmb_desc))
|
||||
return SMC_CLC_DECL_ERR_REGRMB;
|
||||
}
|
||||
|
@ -1237,12 +1237,12 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)
|
|||
/* listen worker: finish RDMA setup */
|
||||
static int smc_listen_rdma_finish(struct smc_sock *new_smc,
|
||||
struct smc_clc_msg_accept_confirm *cclc,
|
||||
int local_contact)
|
||||
bool local_first)
|
||||
{
|
||||
struct smc_link *link = new_smc->conn.lnk;
|
||||
int reason_code = 0;
|
||||
|
||||
if (local_contact == SMC_FIRST_CONTACT)
|
||||
if (local_first)
|
||||
smc_link_save_peer_info(link, cclc);
|
||||
|
||||
if (smc_rmb_rtoken_handling(&new_smc->conn, link, cclc)) {
|
||||
|
@ -1250,7 +1250,7 @@ static int smc_listen_rdma_finish(struct smc_sock *new_smc,
|
|||
goto decline;
|
||||
}
|
||||
|
||||
if (local_contact == SMC_FIRST_CONTACT) {
|
||||
if (local_first) {
|
||||
if (smc_ib_ready_link(link)) {
|
||||
reason_code = SMC_CLC_DECL_ERR_RDYLNK;
|
||||
goto decline;
|
||||
|
@ -1265,7 +1265,7 @@ static int smc_listen_rdma_finish(struct smc_sock *new_smc,
|
|||
return 0;
|
||||
|
||||
decline:
|
||||
smc_listen_decline(new_smc, reason_code, local_contact);
|
||||
smc_listen_decline(new_smc, reason_code, local_first);
|
||||
return reason_code;
|
||||
}
|
||||
|
||||
|
@ -1358,13 +1358,13 @@ static void smc_listen_work(struct work_struct *work)
|
|||
rc = smc_listen_rdma_init(new_smc, &ini);
|
||||
if (rc)
|
||||
goto out_unlock;
|
||||
rc = smc_listen_rdma_reg(new_smc, ini.cln_first_contact);
|
||||
rc = smc_listen_rdma_reg(new_smc, ini.first_contact_local);
|
||||
if (rc)
|
||||
goto out_unlock;
|
||||
}
|
||||
|
||||
/* send SMC Accept CLC message */
|
||||
rc = smc_clc_send_accept(new_smc, ini.cln_first_contact);
|
||||
rc = smc_clc_send_accept(new_smc, ini.first_contact_local);
|
||||
if (rc)
|
||||
goto out_unlock;
|
||||
|
||||
|
@ -1384,7 +1384,7 @@ static void smc_listen_work(struct work_struct *work)
|
|||
/* finish worker */
|
||||
if (!ism_supported) {
|
||||
rc = smc_listen_rdma_finish(new_smc, &cclc,
|
||||
ini.cln_first_contact);
|
||||
ini.first_contact_local);
|
||||
mutex_unlock(&smc_server_lgr_pending);
|
||||
if (rc)
|
||||
return;
|
||||
|
@ -1396,7 +1396,7 @@ static void smc_listen_work(struct work_struct *work)
|
|||
out_unlock:
|
||||
mutex_unlock(&smc_server_lgr_pending);
|
||||
out_decl:
|
||||
smc_listen_decline(new_smc, rc, ini.cln_first_contact);
|
||||
smc_listen_decline(new_smc, rc, ini.first_contact_local);
|
||||
}
|
||||
|
||||
static void smc_tcp_listen_work(struct work_struct *work)
|
||||
|
|
|
@ -18,6 +18,8 @@
|
|||
|
||||
#include "smc_ib.h"
|
||||
|
||||
#define SMC_V1 1 /* SMC version V1 */
|
||||
|
||||
#define SMCPROTO_SMC 0 /* SMC protocol, IPv4 */
|
||||
#define SMCPROTO_SMC6 1 /* SMC protocol, IPv6 */
|
||||
|
||||
|
|
|
@ -320,7 +320,7 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
|
|||
}
|
||||
datlen = ntohs(clcm->length);
|
||||
if ((len < sizeof(struct smc_clc_msg_hdr)) ||
|
||||
(clcm->version < SMC_CLC_V1) ||
|
||||
(clcm->version < SMC_V1) ||
|
||||
((clcm->type != SMC_CLC_DECLINE) &&
|
||||
(clcm->type != expected_type))) {
|
||||
smc->sk.sk_err = EPROTO;
|
||||
|
@ -389,7 +389,7 @@ int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info)
|
|||
memcpy(dclc.hdr.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER));
|
||||
dclc.hdr.type = SMC_CLC_DECLINE;
|
||||
dclc.hdr.length = htons(sizeof(struct smc_clc_msg_decline));
|
||||
dclc.hdr.version = SMC_CLC_V1;
|
||||
dclc.hdr.version = SMC_V1;
|
||||
dclc.hdr.flag = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ? 1 : 0;
|
||||
if ((!smc->conn.lgr || !smc->conn.lgr->is_smcd) &&
|
||||
smc_ib_is_valid_local_systemid())
|
||||
|
@ -434,7 +434,7 @@ int smc_clc_send_proposal(struct smc_sock *smc, int smc_type,
|
|||
memset(&pclc, 0, sizeof(pclc));
|
||||
memcpy(pclc.hdr.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER));
|
||||
pclc.hdr.type = SMC_CLC_PROPOSAL;
|
||||
pclc.hdr.version = SMC_CLC_V1; /* SMC version */
|
||||
pclc.hdr.version = SMC_V1; /* SMC version */
|
||||
pclc.hdr.path = smc_type;
|
||||
if (smc_type == SMC_TYPE_R || smc_type == SMC_TYPE_B) {
|
||||
/* add SMC-R specifics */
|
||||
|
@ -499,8 +499,8 @@ int smc_clc_send_confirm(struct smc_sock *smc)
|
|||
/* send SMC Confirm CLC msg */
|
||||
memset(&cclc, 0, sizeof(cclc));
|
||||
cclc.hdr.type = SMC_CLC_CONFIRM;
|
||||
cclc.hdr.version = SMC_CLC_V1; /* SMC version */
|
||||
if (smc->conn.lgr->is_smcd) {
|
||||
cclc.hdr.version = SMC_V1; /* SMC version */
|
||||
if (conn->lgr->is_smcd) {
|
||||
/* SMC-D specific settings */
|
||||
memcpy(cclc.hdr.eyecatcher, SMCD_EYECATCHER,
|
||||
sizeof(SMCD_EYECATCHER));
|
||||
|
@ -557,7 +557,7 @@ int smc_clc_send_confirm(struct smc_sock *smc)
|
|||
}
|
||||
|
||||
/* send CLC ACCEPT message across internal TCP socket */
|
||||
int smc_clc_send_accept(struct smc_sock *new_smc, int srv_first_contact)
|
||||
int smc_clc_send_accept(struct smc_sock *new_smc, bool srv_first_contact)
|
||||
{
|
||||
struct smc_connection *conn = &new_smc->conn;
|
||||
struct smc_clc_msg_accept_confirm aclc;
|
||||
|
@ -568,11 +568,11 @@ int smc_clc_send_accept(struct smc_sock *new_smc, int srv_first_contact)
|
|||
|
||||
memset(&aclc, 0, sizeof(aclc));
|
||||
aclc.hdr.type = SMC_CLC_ACCEPT;
|
||||
aclc.hdr.version = SMC_CLC_V1; /* SMC version */
|
||||
aclc.hdr.version = SMC_V1; /* SMC version */
|
||||
if (srv_first_contact)
|
||||
aclc.hdr.flag = 1;
|
||||
|
||||
if (new_smc->conn.lgr->is_smcd) {
|
||||
if (conn->lgr->is_smcd) {
|
||||
/* SMC-D specific settings */
|
||||
aclc.hdr.length = htons(SMCD_CLC_ACCEPT_CONFIRM_LEN);
|
||||
memcpy(aclc.hdr.eyecatcher, SMCD_EYECATCHER,
|
||||
|
|
|
@ -22,7 +22,6 @@
|
|||
#define SMC_CLC_CONFIRM 0x03
|
||||
#define SMC_CLC_DECLINE 0x04
|
||||
|
||||
#define SMC_CLC_V1 0x1 /* SMC version */
|
||||
#define SMC_TYPE_R 0 /* SMC-R only */
|
||||
#define SMC_TYPE_D 1 /* SMC-D only */
|
||||
#define SMC_TYPE_N 2 /* neither SMC-R nor SMC-D */
|
||||
|
@ -200,6 +199,6 @@ int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info);
|
|||
int smc_clc_send_proposal(struct smc_sock *smc, int smc_type,
|
||||
struct smc_init_info *ini);
|
||||
int smc_clc_send_confirm(struct smc_sock *smc);
|
||||
int smc_clc_send_accept(struct smc_sock *smc, int srv_first_contact);
|
||||
int smc_clc_send_accept(struct smc_sock *smc, bool srv_first_contact);
|
||||
|
||||
#endif
|
||||
|
|
|
@ -418,7 +418,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
|
|||
if (ini->is_smcd) {
|
||||
/* SMC-D specific settings */
|
||||
get_device(&ini->ism_dev->dev);
|
||||
lgr->peer_gid = ini->ism_gid;
|
||||
lgr->peer_gid = ini->ism_peer_gid;
|
||||
lgr->smcd = ini->ism_dev;
|
||||
lgr_list = &ini->ism_dev->lgr_list;
|
||||
lgr_lock = &lgr->smcd->lgr_lock;
|
||||
|
@ -1296,9 +1296,9 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
|
|||
|
||||
lgr_list = ini->is_smcd ? &ini->ism_dev->lgr_list : &smc_lgr_list.list;
|
||||
lgr_lock = ini->is_smcd ? &ini->ism_dev->lgr_lock : &smc_lgr_list.lock;
|
||||
ini->cln_first_contact = SMC_FIRST_CONTACT;
|
||||
ini->first_contact_local = 1;
|
||||
role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
|
||||
if (role == SMC_CLNT && ini->srv_first_contact)
|
||||
if (role == SMC_CLNT && ini->first_contact_peer)
|
||||
/* create new link group as well */
|
||||
goto create;
|
||||
|
||||
|
@ -1307,14 +1307,14 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
|
|||
list_for_each_entry(lgr, lgr_list, list) {
|
||||
write_lock_bh(&lgr->conns_lock);
|
||||
if ((ini->is_smcd ?
|
||||
smcd_lgr_match(lgr, ini->ism_dev, ini->ism_gid) :
|
||||
smcd_lgr_match(lgr, ini->ism_dev, ini->ism_peer_gid) :
|
||||
smcr_lgr_match(lgr, ini->ib_lcl, role, ini->ib_clcqpn)) &&
|
||||
!lgr->sync_err &&
|
||||
lgr->vlan_id == ini->vlan_id &&
|
||||
(role == SMC_CLNT || ini->is_smcd ||
|
||||
lgr->conns_num < SMC_RMBS_PER_LGR_MAX)) {
|
||||
/* link group found */
|
||||
ini->cln_first_contact = SMC_REUSE_CONTACT;
|
||||
ini->first_contact_local = 0;
|
||||
conn->lgr = lgr;
|
||||
rc = smc_lgr_register_conn(conn, false);
|
||||
write_unlock_bh(&lgr->conns_lock);
|
||||
|
@ -1328,8 +1328,8 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
|
|||
if (rc)
|
||||
return rc;
|
||||
|
||||
if (role == SMC_CLNT && !ini->srv_first_contact &&
|
||||
ini->cln_first_contact == SMC_FIRST_CONTACT) {
|
||||
if (role == SMC_CLNT && !ini->first_contact_peer &&
|
||||
ini->first_contact_local) {
|
||||
/* Server reuses a link group, but Client wants to start
|
||||
* a new one
|
||||
* send out_of_sync decline, reason synchr. error
|
||||
|
@ -1338,7 +1338,7 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
|
|||
}
|
||||
|
||||
create:
|
||||
if (ini->cln_first_contact == SMC_FIRST_CONTACT) {
|
||||
if (ini->first_contact_local) {
|
||||
rc = smc_lgr_create(smc, ini);
|
||||
if (rc)
|
||||
goto out;
|
||||
|
|
|
@ -137,9 +137,6 @@ struct smc_link {
|
|||
#define SMC_LINKS_PER_LGR_MAX 3
|
||||
#define SMC_SINGLE_LINK 0
|
||||
|
||||
#define SMC_FIRST_CONTACT 1 /* first contact to a peer */
|
||||
#define SMC_REUSE_CONTACT 0 /* follow-on contact to a peer*/
|
||||
|
||||
/* tx/rx buffer list element for sndbufs list and rmbs list of a lgr */
|
||||
struct smc_buf_desc {
|
||||
struct list_head list;
|
||||
|
@ -294,9 +291,9 @@ struct smc_clc_msg_local;
|
|||
|
||||
struct smc_init_info {
|
||||
u8 is_smcd;
|
||||
u8 first_contact_peer;
|
||||
u8 first_contact_local;
|
||||
unsigned short vlan_id;
|
||||
int srv_first_contact;
|
||||
int cln_first_contact;
|
||||
/* SMC-R */
|
||||
struct smc_clc_msg_local *ib_lcl;
|
||||
struct smc_ib_device *ib_dev;
|
||||
|
@ -304,7 +301,7 @@ struct smc_init_info {
|
|||
u8 ib_port;
|
||||
u32 ib_clcqpn;
|
||||
/* SMC-D */
|
||||
u64 ism_gid;
|
||||
u64 ism_peer_gid;
|
||||
struct smcd_dev *ism_dev;
|
||||
};
|
||||
|
||||
|
|
Loading…
Reference in a new issue