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authorGuvenc Gulce <guvenc@linux.ibm.com>2021-08-09 11:05:57 +0200
committerDavid S. Miller <davem@davemloft.net>2021-08-09 10:46:59 +0100
commit64513d269e8971aabb7e787955a1b320e3031306 (patch)
tree3cc6fe63386e7c658b0ec68e9b3dc58c520bbda9 /net
parent8f3d65c166797746455553f4eaf74a5f89f996d4 (diff)
net/smc: Correct smc link connection counter in case of smc client
SMC clients may be assigned to a different link after the initial connection between two peers was established. In such a case, the connection counter was not correctly set. Update the connection counter correctly when a smc client connection is assigned to a different smc link. Fixes: 07d51580ff65 ("net/smc: Add connection counters for links") Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com> Tested-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/smc/af_smc.c2
-rw-r--r--net/smc/smc_core.c4
-rw-r--r--net/smc/smc_core.h2
3 files changed, 5 insertions, 3 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 898389611ae8..c038efc23ce3 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -795,7 +795,7 @@ static int smc_connect_rdma(struct smc_sock *smc,
reason_code = SMC_CLC_DECL_NOSRVLINK;
goto connect_abort;
}
- smc->conn.lnk = link;
+ smc_switch_link_and_count(&smc->conn, link);
}
/* create send buffer and rmb */
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index cd0d7c908b2a..c160ff50c053 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -917,8 +917,8 @@ static int smc_switch_cursor(struct smc_sock *smc, struct smc_cdc_tx_pend *pend,
return rc;
}
-static void smc_switch_link_and_count(struct smc_connection *conn,
- struct smc_link *to_lnk)
+void smc_switch_link_and_count(struct smc_connection *conn,
+ struct smc_link *to_lnk)
{
atomic_dec(&conn->lnk->conn_cnt);
conn->lnk = to_lnk;
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 64d86298e4df..c043ecdca5c4 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -446,6 +446,8 @@ void smc_core_exit(void);
int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
u8 link_idx, struct smc_init_info *ini);
void smcr_link_clear(struct smc_link *lnk, bool log);
+void smc_switch_link_and_count(struct smc_connection *conn,
+ struct smc_link *to_lnk);
int smcr_buf_map_lgr(struct smc_link *lnk);
int smcr_buf_reg_lgr(struct smc_link *lnk);
void smcr_lgr_set_type(struct smc_link_group *lgr, enum smc_lgr_type new_type);