| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20200501104813.76601-2-kgraul@linux.ibm.com>
Date: Fri, 1 May 2020 12:48:01 +0200
From: Karsten Graul <kgraul@...ux.ibm.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-s390@...r.kernel.org,
heiko.carstens@...ibm.com, raspl@...ux.ibm.com,
ubraun@...ux.ibm.com
Subject: [PATCH net-next 01/13] net/smc: multiple link support for rmb buffer registration
The CONFIRM_RKEY LLC processing handles all links in one LLC message.
Move the call to this processing out of smcr_link_reg_rmb() which does
processing per link, into smcr_lgr_reg_rmbs() which is responsible for
link group level processing. Move smcr_link_reg_rmb() into module
smc_core.c.
>From af_smc.c now call smcr_lgr_reg_rmbs() to register new rmbs on all
available links.
Signed-off-by: Karsten Graul <kgraul@...ux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@...ux.ibm.com>
---
net/smc/af_smc.c | 54 ++++++++++++++++------------------------------
net/smc/smc_core.c | 16 ++++++++++++++
net/smc/smc_core.h | 1 +
3 files changed, 36 insertions(+), 35 deletions(-)
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index bd9662d06896..20d6d3fbb86c 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -337,46 +337,30 @@ static void smc_copy_sock_settings_to_smc(struct smc_sock *smc)
smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC);
}
-/* register a new rmb, send confirm_rkey msg to register with peer */
-static int smcr_link_reg_rmb(struct smc_link *link,
- struct smc_buf_desc *rmb_desc, bool conf_rkey)
-{
- if (!rmb_desc->is_reg_mr[link->link_idx]) {
- /* register memory region for new rmb */
- if (smc_wr_reg_send(link, rmb_desc->mr_rx[link->link_idx])) {
- rmb_desc->is_reg_err = true;
- return -EFAULT;
- }
- rmb_desc->is_reg_mr[link->link_idx] = true;
- }
- if (!conf_rkey)
- return 0;
-
- /* exchange confirm_rkey msg with peer */
- if (!rmb_desc->is_conf_rkey) {
- if (smc_llc_do_confirm_rkey(link, rmb_desc)) {
- rmb_desc->is_reg_err = true;
- return -EFAULT;
- }
- rmb_desc->is_conf_rkey = true;
- }
- return 0;
-}
-
/* register the new rmb on all links */
-static int smcr_lgr_reg_rmbs(struct smc_link_group *lgr,
+static int smcr_lgr_reg_rmbs(struct smc_link *link,
struct smc_buf_desc *rmb_desc)
{
- int i, rc;
+ struct smc_link_group *lgr = link->lgr;
+ int i, rc = 0;
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (lgr->lnk[i].state != SMC_LNK_ACTIVE)
continue;
- rc = smcr_link_reg_rmb(&lgr->lnk[i], rmb_desc, true);
+ rc = smcr_link_reg_rmb(&lgr->lnk[i], rmb_desc);
if (rc)
- return rc;
+ goto out;
}
- return 0;
+
+ /* exchange confirm_rkey msg with peer */
+ rc = smc_llc_do_confirm_rkey(link, rmb_desc);
+ if (rc) {
+ rc = -EFAULT;
+ goto out;
+ }
+ rmb_desc->is_conf_rkey = true;
+out:
+ return rc;
}
static int smcr_clnt_conf_first_link(struct smc_sock *smc)
@@ -408,7 +392,7 @@ static int smcr_clnt_conf_first_link(struct smc_sock *smc)
smc_wr_remember_qp_attr(link);
- if (smcr_link_reg_rmb(link, smc->conn.rmb_desc, false))
+ if (smcr_link_reg_rmb(link, smc->conn.rmb_desc))
return SMC_CLC_DECL_ERR_REGRMB;
/* confirm_rkey is implicit on 1st contact */
@@ -670,7 +654,7 @@ static int smc_connect_rdma(struct smc_sock *smc,
return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RDYLNK,
ini->cln_first_contact);
} else {
- if (smcr_lgr_reg_rmbs(smc->conn.lgr, smc->conn.rmb_desc))
+ if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc))
return smc_connect_abort(smc, SMC_CLC_DECL_ERR_REGRMB,
ini->cln_first_contact);
}
@@ -1045,7 +1029,7 @@ static int smcr_serv_conf_first_link(struct smc_sock *smc)
link->lgr->type = SMC_LGR_SINGLE;
- if (smcr_link_reg_rmb(link, smc->conn.rmb_desc, false))
+ if (smcr_link_reg_rmb(link, smc->conn.rmb_desc))
return SMC_CLC_DECL_ERR_REGRMB;
/* send CONFIRM LINK request to client over the RoCE fabric */
@@ -1220,7 +1204,7 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)
struct smc_connection *conn = &new_smc->conn;
if (local_contact != SMC_FIRST_CONTACT) {
- if (smcr_lgr_reg_rmbs(conn->lgr, conn->rmb_desc))
+ if (smcr_lgr_reg_rmbs(conn->lnk, conn->rmb_desc))
return SMC_CLC_DECL_ERR_REGRMB;
}
smc_rmb_sync_sg_for_device(&new_smc->conn);
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 3539ceef9a97..de6bc36fe9a7 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1127,6 +1127,22 @@ static int smcr_buf_map_link(struct smc_buf_desc *buf_desc, bool is_rmb,
return rc;
}
+/* register a new rmb on IB device */
+int smcr_link_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc)
+{
+ if (list_empty(&link->lgr->list))
+ return -ENOLINK;
+ if (!rmb_desc->is_reg_mr[link->link_idx]) {
+ /* register memory region for new rmb */
+ if (smc_wr_reg_send(link, rmb_desc->mr_rx[link->link_idx])) {
+ rmb_desc->is_reg_err = true;
+ return -EFAULT;
+ }
+ rmb_desc->is_reg_mr[link->link_idx] = true;
+ }
+ return 0;
+}
+
static struct smc_buf_desc *smcr_new_buf_create(struct smc_link_group *lgr,
bool is_rmb, int bufsize)
{
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index f12474cc666c..fd512188d2c6 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -367,6 +367,7 @@ void smc_lgr_schedule_free_work_fast(struct smc_link_group *lgr);
int smc_core_init(void);
void smc_core_exit(void);
+int smcr_link_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc);
static inline struct smc_link_group *smc_get_lgr(struct smc_link *link)
{
return link->lgr;
--
2.17.1
Powered by blists - more mailing lists