Revert "net/smc: fix listen processing for SMC-Rv2"

This reverts commit 8c3b8dc5cc9bf6d273ebe18b16e2d6882bcfb36d.

Some rollback issue will be fixed in other patches in the future.

Link: https://lore.kernel.org/all/20220523055056.2078994-1-liuyacan@corp.netease.com/
Fixes: 8c3b8dc5cc9b ("net/smc: fix listen processing for SMC-Rv2")
Signed-off-by: liuyacan <liuyacan@corp.netease.com>
Link: https://lore.kernel.org/r/20220524090230.2140302-1-liuyacan@corp.netease.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 1a556f47f89e97e1fe480239aeed3b7d3dafce2a..a201bf29af98daf83c26cfa2e179c54a34956e3b 100644 (file)
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -2118,13 +2118,13 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first)
        return 0;
 }
 
-static int smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
-                                       struct smc_clc_msg_proposal *pclc,
-                                       struct smc_init_info *ini)
+static void 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 = 0;
+       int rc;
 
        if (!(ini->smcr_version & SMC_V2) || !smcr_indicated(ini->smc_type_v2))
                goto not_found;
@@ -2142,31 +2142,26 @@ static int 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)
+       if (rc) {
+               smc_find_ism_store_rc(rc, ini);
                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) {
-               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;
+       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);
 
 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,
@@ -2199,7 +2194,6 @@ 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);
@@ -2227,18 +2221,14 @@ static int smc_listen_find_device(struct smc_sock *new_smc,
                return ini->rc ?: SMC_CLC_DECL_NOSMCDDEV;
 
        /* check if RDMA V2 is available */
-       rc = smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
-       if (!rc)
+       smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
+       if (ini->smcrv2.ib_dev_v2)
                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;