summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/smc/af_smc.c92
1 files changed, 48 insertions, 44 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 670e802a73cb..82be0bd0f6e8 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -553,23 +553,12 @@ 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_first)
+static void smc_connect_abort(struct smc_sock *smc, int local_first)
{
- bool is_smcd = smc->conn.lgr->is_smcd;
-
if (local_first)
smc_lgr_cleanup_early(&smc->conn);
else
smc_conn_free(&smc->conn);
- if (is_smcd)
- /* there is only one lgr role for SMC-D; use server lock */
- mutex_unlock(&smc_server_lgr_pending);
- else
- mutex_unlock(&smc_client_lgr_pending);
-
- smc->connect_nonblock = 0;
- return reason_code;
}
/* check if there is a rdma device available for this connection. */
@@ -764,43 +753,47 @@ static int smc_connect_rdma(struct smc_sock *smc,
break;
}
}
- if (!link)
- return smc_connect_abort(smc, SMC_CLC_DECL_NOSRVLINK,
- ini->first_contact_local);
+ if (!link) {
+ reason_code = SMC_CLC_DECL_NOSRVLINK;
+ goto connect_abort;
+ }
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->first_contact_local);
+ if (smc_buf_create(smc, false)) {
+ reason_code = SMC_CLC_DECL_MEM;
+ goto connect_abort;
+ }
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->first_contact_local);
+ if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) {
+ reason_code = SMC_CLC_DECL_ERR_RTOK;
+ goto connect_abort;
+ }
smc_close_init(smc);
smc_rx_init(smc);
if (ini->first_contact_local) {
- if (smc_ib_ready_link(link))
- return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RDYLNK,
- ini->first_contact_local);
+ if (smc_ib_ready_link(link)) {
+ reason_code = SMC_CLC_DECL_ERR_RDYLNK;
+ goto connect_abort;
+ }
} else {
- if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc))
- return smc_connect_abort(smc, SMC_CLC_DECL_ERR_REGRMB,
- ini->first_contact_local);
+ if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) {
+ reason_code = SMC_CLC_DECL_ERR_REGRMB;
+ goto connect_abort;
+ }
}
smc_rmb_sync_sg_for_device(&smc->conn);
reason_code = smc_clc_send_confirm(smc, ini->first_contact_local,
SMC_V1);
if (reason_code)
- return smc_connect_abort(smc, reason_code,
- ini->first_contact_local);
+ goto connect_abort;
smc_tx_init(smc);
@@ -810,8 +803,7 @@ static int smc_connect_rdma(struct smc_sock *smc,
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->first_contact_local);
+ goto connect_abort;
}
mutex_unlock(&smc_client_lgr_pending);
@@ -821,6 +813,12 @@ static int smc_connect_rdma(struct smc_sock *smc,
smc->sk.sk_state = SMC_ACTIVE;
return 0;
+connect_abort:
+ smc_connect_abort(smc, ini->first_contact_local);
+ mutex_unlock(&smc_client_lgr_pending);
+ smc->connect_nonblock = 0;
+
+ return reason_code;
}
/* The server has chosen one of the proposed ISM devices for the communication.
@@ -872,11 +870,10 @@ static int smc_connect_ism(struct smc_sock *smc,
/* Create send and receive buffers */
rc = smc_buf_create(smc, true);
- if (rc)
- return smc_connect_abort(smc, (rc == -ENOSPC) ?
- SMC_CLC_DECL_MAX_DMB :
- SMC_CLC_DECL_MEM,
- ini->first_contact_local);
+ if (rc) {
+ rc = (rc == -ENOSPC) ? SMC_CLC_DECL_MAX_DMB : SMC_CLC_DECL_MEM;
+ goto connect_abort;
+ }
smc_conn_save_peer_info(smc, aclc);
smc_close_init(smc);
@@ -886,7 +883,7 @@ static int smc_connect_ism(struct smc_sock *smc,
rc = smc_clc_send_confirm(smc, ini->first_contact_local,
aclc->hdr.version);
if (rc)
- return smc_connect_abort(smc, rc, ini->first_contact_local);
+ goto connect_abort;
mutex_unlock(&smc_server_lgr_pending);
smc_copy_sock_settings_to_clc(smc);
@@ -895,6 +892,12 @@ static int smc_connect_ism(struct smc_sock *smc,
smc->sk.sk_state = SMC_ACTIVE;
return 0;
+connect_abort:
+ smc_connect_abort(smc, ini->first_contact_local);
+ mutex_unlock(&smc_server_lgr_pending);
+ smc->connect_nonblock = 0;
+
+ return rc;
}
/* check if received accept type and version matches a proposed one */
@@ -1478,11 +1481,12 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
struct smc_clc_v2_extension *smc_v2_ext;
struct smc_clc_msg_smcd *pclc_smcd;
unsigned int matches = 0;
+ u8 smcd_version;
u8 *eid = NULL;
int i;
if (!(ini->smcd_version & SMC_V2) || !smcd_indicated(ini->smc_type_v2))
- return;
+ goto not_found;
pclc_smcd = smc_get_clc_msg_smcd(pclc);
smc_v2_ext = smc_get_clc_v2_ext(pclc);
@@ -1516,6 +1520,7 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
}
/* separate - outside the smcd_dev_list.lock */
+ smcd_version = ini->smcd_version;
for (i = 0; i < matches; i++) {
ini->smcd_version = SMC_V2;
ini->is_smcd = true;
@@ -1525,6 +1530,8 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
continue;
return; /* matching and usable V2 ISM device found */
}
+ /* no V2 ISM device could be initialized */
+ ini->smcd_version = smcd_version; /* restore original value */
not_found:
ini->smcd_version &= ~SMC_V2;
@@ -1661,7 +1668,6 @@ static void smc_listen_work(struct work_struct *work)
smc_listen_work);
u8 version = smc_ism_v2_capable ? SMC_V2 : SMC_V1;
struct socket *newclcsock = new_smc->clcsock;
- struct smc_clc_msg_accept_confirm_v2 *cclc2;
struct smc_clc_msg_accept_confirm *cclc;
struct smc_clc_msg_proposal_area *buf;
struct smc_clc_msg_proposal *pclc;
@@ -1737,11 +1743,9 @@ static void smc_listen_work(struct work_struct *work)
mutex_unlock(&smc_server_lgr_pending);
/* receive SMC Confirm CLC message */
- cclc2 = (struct smc_clc_msg_accept_confirm_v2 *)buf;
- cclc = (struct smc_clc_msg_accept_confirm *)cclc2;
- memset(buf, 0, sizeof(struct smc_clc_msg_proposal_area));
- rc = smc_clc_wait_msg(new_smc, cclc2,
- sizeof(struct smc_clc_msg_proposal_area),
+ memset(buf, 0, sizeof(*buf));
+ cclc = (struct smc_clc_msg_accept_confirm *)buf;
+ rc = smc_clc_wait_msg(new_smc, cclc, sizeof(*buf),
SMC_CLC_CONFIRM, CLC_WAIT_TIME);
if (rc) {
if (!ini->is_smcd)
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-27 08:44:02 +0300