Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

drivers/net/ethernet/cadence/macb_main.c
  5cebb40bc955 ("net: macb: Fix PTP one step sync support")
  138badbc21a0 ("net: macb: use NAPI for TX completion path")
https://lore.kernel.org/all/20220523111021.31489367@canb.auug.org.au/

net/smc/af_smc.c
  75c1edf23b95 ("net/smc: postpone sk_refcnt increment in connect()")
  3aba103006bc ("net/smc: align the connect behaviour with TCP")
https://lore.kernel.org/all/20220524114408.4bf1af38@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 28 insertions, 18 deletions

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 5f70642a8044..1a556f47f89e 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1584,11 +1584,11 @@ static int smc_connect(struct socket *sock, struct sockaddr *addr,
 	if (rc && rc != -EINPROGRESS)
 		goto out;
 
-	sock_hold(&smc->sk); /* sock put in passive closing */
 	if (smc->use_fallback) {
 		sock->state = rc ? SS_CONNECTING : SS_CONNECTED;
 		goto out;
 	}
+	sock_hold(&smc->sk); /* sock put in passive closing */
 	if (flags & O_NONBLOCK) {
 		if (queue_work(smc_hs_wq, &smc->connect_work))
 			smc->connect_nonblock = 1;
@@ -2118,13 +2118,13 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first)
 	return 0;
 }
 
-static void smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
-					 struct smc_clc_msg_proposal *pclc,
-					 struct smc_init_info *ini)
+static int smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
+					struct smc_clc_msg_proposal *pclc,
+					struct smc_init_info *ini)
 {
 	struct smc_clc_v2_extension *smc_v2_ext;
 	u8 smcr_version;
-	int rc;
+	int rc = 0;
 
 	if (!(ini->smcr_version & SMC_V2) || !smcr_indicated(ini->smc_type_v2))
 		goto not_found;
@@ -2142,26 +2142,31 @@ static void smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
 	ini->smcrv2.saddr = new_smc->clcsock->sk->sk_rcv_saddr;
 	ini->smcrv2.daddr = smc_ib_gid_to_ipv4(smc_v2_ext->roce);
 	rc = smc_find_rdma_device(new_smc, ini);
-	if (rc) {
-		smc_find_ism_store_rc(rc, ini);
+	if (rc)
 		goto not_found;
-	}
+
 	if (!ini->smcrv2.uses_gateway)
 		memcpy(ini->smcrv2.nexthop_mac, pclc->lcl.mac, ETH_ALEN);
 
 	smcr_version = ini->smcr_version;
 	ini->smcr_version = SMC_V2;
 	rc = smc_listen_rdma_init(new_smc, ini);
-	if (!rc)
-		rc = smc_listen_rdma_reg(new_smc, ini->first_contact_local);
-	if (!rc)
-		return;
-	ini->smcr_version = smcr_version;
-	smc_find_ism_store_rc(rc, ini);
+	if (rc) {
+		ini->smcr_version = smcr_version;
+		goto not_found;
+	}
+	rc = smc_listen_rdma_reg(new_smc, ini->first_contact_local);
+	if (rc) {
+		ini->smcr_version = smcr_version;
+		goto not_found;
+	}
+	return 0;
 
 not_found:
+	rc = rc ?: SMC_CLC_DECL_NOSMCDEV;
 	ini->smcr_version &= ~SMC_V2;
 	ini->check_smcrv2 = false;
+	return rc;
 }
 
 static int smc_find_rdma_v1_device_serv(struct smc_sock *new_smc,
@@ -2194,6 +2199,7 @@ static int smc_listen_find_device(struct smc_sock *new_smc,
 				  struct smc_init_info *ini)
 {
 	int prfx_rc;
+	int rc;
 
 	/* check for ISM device matching V2 proposed device */
 	smc_find_ism_v2_device_serv(new_smc, pclc, ini);
@@ -2221,14 +2227,18 @@ static int smc_listen_find_device(struct smc_sock *new_smc,
 		return ini->rc ?: SMC_CLC_DECL_NOSMCDDEV;
 
 	/* check if RDMA V2 is available */
-	smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
-	if (ini->smcrv2.ib_dev_v2)
+	rc = smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
+	if (!rc)
 		return 0;
 
+	/* skip V1 check if V2 is unavailable for non-Device reason */
+	if (rc != SMC_CLC_DECL_NOSMCDEV &&
+	    rc != SMC_CLC_DECL_NOSMCRDEV &&
+	    rc != SMC_CLC_DECL_NOSMCDDEV)
+		return rc;
+
 	/* check if RDMA V1 is available */
 	if (!prfx_rc) {
-		int rc;
-
 		rc = smc_find_rdma_v1_device_serv(new_smc, pclc, ini);
 		smc_find_ism_store_rc(rc, ini);
 		return (!rc) ? 0 : ini->rc;