From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Jurgens Subject: [PATCH v7 1/9] IB/core: IB cache enhancements to support Infiniband security Date: Fri, 19 May 2017 15:48:51 +0300 Message-ID: <1495198139-69993-2-git-send-email-danielj@mellanox.com> References: <1495198139-69993-1-git-send-email-danielj@mellanox.com> Return-path: In-Reply-To: <1495198139-69993-1-git-send-email-danielj@mellanox.com> Sender: owner-linux-security-module@vger.kernel.org To: chrisw@sous-sol.org, paul@paul-moore.com, sds@tycho.nsa.gov, eparis@parisplace.org, dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com Cc: selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org, linux-rdma@vger.kernel.org, yevgenyp@mellanox.com, Daniel Jurgens List-Id: linux-rdma@vger.kernel.org From: Daniel Jurgens Cache the subnet prefix and add a function to access it. Enforcing security requires frequent queries of the subnet prefix and the pkeys in the pkey table. Signed-off-by: Daniel Jurgens Reviewed-by: Eli Cohen Reviewed-by: Leon Romanovsky --- v2: - In ib_get_cached_subnet_prefix wait to initialize p until after validation. Yuval Shaia drivers/infiniband/core/cache.c | 22 ++++++++++++++++++++++ drivers/infiniband/core/core_priv.h | 3 +++ include/rdma/ib_verbs.h | 1 + 3 files changed, 26 insertions(+) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index b1371eb..b9c0066 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -911,6 +911,26 @@ int ib_get_cached_pkey(struct ib_device *device, } EXPORT_SYMBOL(ib_get_cached_pkey); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx) +{ + unsigned long flags; + int p; + + if (port_num < rdma_start_port(device) || + port_num > rdma_end_port(device)) + return -EINVAL; + + p = port_num - rdma_start_port(device); + read_lock_irqsave(&device->cache.lock, flags); + *sn_pfx = device->cache.ports[p].subnet_prefix; + read_unlock_irqrestore(&device->cache.lock, flags); + + return 0; +} +EXPORT_SYMBOL(ib_get_cached_subnet_prefix); + int ib_find_cached_pkey(struct ib_device *device, u8 port_num, u16 pkey, @@ -1108,6 +1128,8 @@ static void ib_cache_update(struct ib_device *device, device->cache.ports[port - rdma_start_port(device)].port_state = tprops->state; + device->cache.ports[port - rdma_start_port(device)].subnet_prefix = + tprops->subnet_prefix; write_unlock_irq(&device->cache.lock); kfree(gid_cache); diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index cb7d372..249e3ed 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -176,4 +176,7 @@ int ib_nl_handle_set_timeout(struct sk_buff *skb, int ib_nl_handle_ip_res_resp(struct sk_buff *skb, struct netlink_callback *cb); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx); #endif /* _CORE_PRIV_H */ diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 99e4423..23486d3 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1841,6 +1841,7 @@ enum ib_mad_result { #define IB_DEVICE_NAME_MAX 64 struct ib_port_cache { + u64 subnet_prefix; struct ib_pkey_cache *pkey; struct ib_gid_table *gid; u8 lmc; -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: danielj@mellanox.com (Dan Jurgens) Date: Fri, 19 May 2017 15:48:51 +0300 Subject: [PATCH v7 1/9] IB/core: IB cache enhancements to support Infiniband security In-Reply-To: <1495198139-69993-1-git-send-email-danielj@mellanox.com> References: <1495198139-69993-1-git-send-email-danielj@mellanox.com> Message-ID: <1495198139-69993-2-git-send-email-danielj@mellanox.com> To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org From: Daniel Jurgens Cache the subnet prefix and add a function to access it. Enforcing security requires frequent queries of the subnet prefix and the pkeys in the pkey table. Signed-off-by: Daniel Jurgens Reviewed-by: Eli Cohen Reviewed-by: Leon Romanovsky --- v2: - In ib_get_cached_subnet_prefix wait to initialize p until after validation. Yuval Shaia drivers/infiniband/core/cache.c | 22 ++++++++++++++++++++++ drivers/infiniband/core/core_priv.h | 3 +++ include/rdma/ib_verbs.h | 1 + 3 files changed, 26 insertions(+) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index b1371eb..b9c0066 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -911,6 +911,26 @@ int ib_get_cached_pkey(struct ib_device *device, } EXPORT_SYMBOL(ib_get_cached_pkey); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx) +{ + unsigned long flags; + int p; + + if (port_num < rdma_start_port(device) || + port_num > rdma_end_port(device)) + return -EINVAL; + + p = port_num - rdma_start_port(device); + read_lock_irqsave(&device->cache.lock, flags); + *sn_pfx = device->cache.ports[p].subnet_prefix; + read_unlock_irqrestore(&device->cache.lock, flags); + + return 0; +} +EXPORT_SYMBOL(ib_get_cached_subnet_prefix); + int ib_find_cached_pkey(struct ib_device *device, u8 port_num, u16 pkey, @@ -1108,6 +1128,8 @@ static void ib_cache_update(struct ib_device *device, device->cache.ports[port - rdma_start_port(device)].port_state = tprops->state; + device->cache.ports[port - rdma_start_port(device)].subnet_prefix = + tprops->subnet_prefix; write_unlock_irq(&device->cache.lock); kfree(gid_cache); diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index cb7d372..249e3ed 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -176,4 +176,7 @@ int ib_nl_handle_set_timeout(struct sk_buff *skb, int ib_nl_handle_ip_res_resp(struct sk_buff *skb, struct netlink_callback *cb); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx); #endif /* _CORE_PRIV_H */ diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 99e4423..23486d3 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1841,6 +1841,7 @@ enum ib_mad_result { #define IB_DEVICE_NAME_MAX 64 struct ib_port_cache { + u64 subnet_prefix; struct ib_pkey_cache *pkey; struct ib_gid_table *gid; u8 lmc; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html