From: Tony Lu <tonylu@linux.alibaba.com> mainline inclusion from mainline-v5.17-rc1 commit 0237a3a683e4844ddc52782d83d439d6192e11f9 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC914B Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- Currently, rdma device supports exclusive net namespace isolation, however linkgroup doesn't know and support ibdev net namespace. Applications in the containers don't want to share the nics if we enabled rdma exclusive mode. Every net namespaces should have their own linkgroups. This patch introduce a new field net for linkgroup, which is standing for the ibdev net namespace in the linkgroup. The net in linkgroup is initialized with the net namespace of link's ibdev. It compares the net of linkgroup and sock or ibdev before choose it, if no matched, create new one in current net namespace. If rdma net namespace exclusive mode is not enabled, it behaves as before. Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Wang Liang <wangliang74@huawei.com> --- net/smc/smc_core.c | 24 +++++++++++++++++------- net/smc/smc_core.h | 2 ++ net/smc/smc_ib.h | 7 +++++++ net/smc/smc_pnet.c | 21 ++++++++++++++++----- 4 files changed, 42 insertions(+), 12 deletions(-) diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index 245a30cd9c1f..f2f698b5246e 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -898,6 +898,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini) smc_wr_free_lgr_mem(lgr); goto free_wq; } + lgr->net = smc_ib_net(lnk->smcibdev); lgr_list = &smc_lgr_list.list; lgr_lock = &smc_lgr_list.lock; lgr->buf_type = sysctl_smcr_buf_type(sock_net(&smc->sk)); @@ -1590,7 +1591,8 @@ void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport) if (strncmp(smcibdev->pnetid[ibport - 1], lgr->pnet_id, SMC_MAX_PNETID_LEN) || lgr->type == SMC_LGR_SYMMETRIC || - lgr->type == SMC_LGR_ASYMMETRIC_PEER) + lgr->type == SMC_LGR_ASYMMETRIC_PEER || + !rdma_dev_access_netns(smcibdev->ibdev, lgr->net)) continue; /* trigger local add link processing */ @@ -1745,8 +1747,10 @@ static bool smcr_lgr_match(struct smc_link_group *lgr, u8 smcr_version, u8 peer_systemid[], u8 peer_gid[], u8 peer_mac_v1[], - enum smc_lgr_role role, u32 clcqpn) + enum smc_lgr_role role, u32 clcqpn, + struct net *net) { + struct smc_link *lnk; int i; if (memcmp(lgr->peer_systemid, peer_systemid, SMC_SYSTEMID_LEN) || @@ -1754,12 +1758,17 @@ static bool smcr_lgr_match(struct smc_link_group *lgr, u8 smcr_version, return false; for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) { - if (!smc_link_active(&lgr->lnk[i])) + lnk = &lgr->lnk[i]; + + if (!smc_link_active(lnk)) continue; - if ((lgr->role == SMC_SERV || lgr->lnk[i].peer_qpn == clcqpn) && - !memcmp(lgr->lnk[i].peer_gid, peer_gid, SMC_GID_SIZE) && + /* use verbs API to check netns, instead of lgr->net */ + if (!rdma_dev_access_netns(lnk->smcibdev->ibdev, net)) + return false; + if ((lgr->role == SMC_SERV || lnk->peer_qpn == clcqpn) && + !memcmp(lnk->peer_gid, peer_gid, SMC_GID_SIZE) && (smcr_version == SMC_V2 || - !memcmp(lgr->lnk[i].peer_mac, peer_mac_v1, ETH_ALEN))) + !memcmp(lnk->peer_mac, peer_mac_v1, ETH_ALEN))) return true; } return false; @@ -1775,6 +1784,7 @@ static bool smcd_lgr_match(struct smc_link_group *lgr, int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini) { struct smc_connection *conn = &smc->conn; + struct net *net = sock_net(&smc->sk); struct list_head *lgr_list; struct smc_link_group *lgr; enum smc_lgr_role role; @@ -1801,7 +1811,7 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini) smcr_lgr_match(lgr, ini->smcr_version, ini->peer_systemid, ini->peer_gid, ini->peer_mac, role, - ini->ib_clcqpn)) && + ini->ib_clcqpn, net)) && !lgr->sync_err && (ini->smcd_version == SMC_V2 || lgr->vlan_id == ini->vlan_id) && diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 5bb2c9a4bcf6..a7718bc84474 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -321,6 +321,8 @@ struct smc_link_group { u8 nexthop_mac[ETH_ALEN]; u8 uses_gateway; __be32 saddr; + /* net namespace */ + struct net *net; }; struct { /* SMC-D */ u64 peer_gid; diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h index fdb54871b52f..034295676e88 100644 --- a/net/smc/smc_ib.h +++ b/net/smc/smc_ib.h @@ -69,6 +69,13 @@ static inline __be32 smc_ib_gid_to_ipv4(u8 gid[SMC_GID_SIZE]) return cpu_to_be32(INADDR_NONE); } +static inline struct net *smc_ib_net(struct smc_ib_device *smcibdev) +{ + if (smcibdev && smcibdev->ibdev) + return read_pnet(&smcibdev->ibdev->coredev.rdma_net); + return NULL; +} + struct smc_init_info_smcrv2; struct smc_buf_desc; struct smc_link; diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c index b3c54c7409c3..c607c2c9150e 100644 --- a/net/smc/smc_pnet.c +++ b/net/smc/smc_pnet.c @@ -988,14 +988,16 @@ static int smc_pnet_determine_gid(struct smc_ib_device *ibdev, int i, /* find a roce device for the given pnetid */ static void _smc_pnet_find_roce_by_pnetid(u8 *pnet_id, struct smc_init_info *ini, - struct smc_ib_device *known_dev) + struct smc_ib_device *known_dev, + struct net *net) { struct smc_ib_device *ibdev; int i; mutex_lock(&smc_ib_devices.mutex); list_for_each_entry(ibdev, &smc_ib_devices.list, list) { - if (ibdev == known_dev) + if (ibdev == known_dev || + !rdma_dev_access_netns(ibdev->ibdev, net)) continue; for (i = 1; i <= SMC_MAX_PORTS; i++) { if (!rdma_is_port_valid(ibdev->ibdev, i)) @@ -1012,12 +1014,14 @@ static void _smc_pnet_find_roce_by_pnetid(u8 *pnet_id, mutex_unlock(&smc_ib_devices.mutex); } -/* find alternate roce device with same pnet_id and vlan_id */ +/* find alternate roce device with same pnet_id, vlan_id and net namespace */ void smc_pnet_find_alt_roce(struct smc_link_group *lgr, struct smc_init_info *ini, struct smc_ib_device *known_dev) { - _smc_pnet_find_roce_by_pnetid(lgr->pnet_id, ini, known_dev); + struct net *net = lgr->net; + + _smc_pnet_find_roce_by_pnetid(lgr->pnet_id, ini, known_dev, net); } /* if handshake network device belongs to a roce device, return its @@ -1026,6 +1030,7 @@ void smc_pnet_find_alt_roce(struct smc_link_group *lgr, static void smc_pnet_find_rdma_dev(struct net_device *netdev, struct smc_init_info *ini) { + struct net *net = dev_net(netdev); struct smc_ib_device *ibdev; mutex_lock(&smc_ib_devices.mutex); @@ -1033,6 +1038,10 @@ static void smc_pnet_find_rdma_dev(struct net_device *netdev, struct net_device *ndev; int i; + /* check rdma net namespace */ + if (!rdma_dev_access_netns(ibdev->ibdev, net)) + continue; + for (i = 1; i <= SMC_MAX_PORTS; i++) { if (!rdma_is_port_valid(ibdev->ibdev, i)) continue; @@ -1063,15 +1072,17 @@ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev, struct smc_init_info *ini) { u8 ndev_pnetid[SMC_MAX_PNETID_LEN]; + struct net *net; ndev = pnet_find_base_ndev(ndev); + net = dev_net(ndev); if (smc_pnetid_by_dev_port(ndev->dev.parent, ndev->dev_port, ndev_pnetid) && smc_pnet_find_ndev_pnetid_by_table(ndev, ndev_pnetid)) { smc_pnet_find_rdma_dev(ndev, ini); return; /* pnetid could not be determined */ } - _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini, NULL); + _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini, NULL, net); } static void smc_pnet_find_ism_by_pnetid(struct net_device *ndev, -- 2.34.1