diff options
100 files changed, 7663 insertions, 567 deletions
diff --git a/Documentation/scsi/scsi_transport_srp/Makefile b/Documentation/scsi/scsi_transport_srp/Makefile new file mode 100644 index 000000000000..5f6b567e955c --- /dev/null +++ b/Documentation/scsi/scsi_transport_srp/Makefile @@ -0,0 +1,7 @@ +all: rport_state_diagram.svg rport_state_diagram.png + +rport_state_diagram.svg: rport_state_diagram.dot + dot -Tsvg -o $@ $< + +rport_state_diagram.png: rport_state_diagram.dot + dot -Tpng -o $@ $< diff --git a/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot b/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot new file mode 100644 index 000000000000..75d610d6411a --- /dev/null +++ b/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot @@ -0,0 +1,26 @@ +digraph srp_initiator { + node [shape = doublecircle]; running lost; + node [shape = circle]; + + { + rank = min; + running_rta [ label = "running;\nreconnect\ntimer\nactive" ]; + }; + running [ label = "running;\nreconnect\ntimer\nstopped" ]; + blocked; + failfast [ label = "fail I/O\nfast" ]; + lost; + + running -> running_rta [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nsrp_start_tl_fail_timers()" ]; + running_rta -> running [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nreconnecting succeeded" ]; + running -> blocked [ label = "fast_io_fail_tmo >= 0 or\ndev_loss_tmo >= 0;\nsrp_start_tl_fail_timers()" ]; + running -> failfast [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nreconnecting failed\n" ]; + blocked -> failfast [ label = "fast_io_fail_tmo\nexpired or\nreconnecting\nfailed" ]; + blocked -> lost [ label = "dev_loss_tmo\nexpired or\nsrp_stop_rport_timers()" ]; + failfast -> lost [ label = "dev_loss_tmo\nexpired or\nsrp_stop_rport_timers()" ]; + blocked -> running [ label = "reconnecting\nsucceeded" ]; + failfast -> failfast [ label = "reconnecting\nfailed" ]; + failfast -> running [ label = "reconnecting\nsucceeded" ]; + running -> lost [ label = "srp_stop_rport_timers()" ]; + running_rta -> lost [ label = "srp_stop_rport_timers()" ]; +} diff --git a/MAINTAINERS b/MAINTAINERS index 17cabd8d0dcb..8a777a235cc9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2195,6 +2195,11 @@ M: Nishank Trivedi <nistrive@cisco.com> S: Supported F: drivers/net/ethernet/cisco/enic/ +CISCO VIC LOW LATENCY NIC DRIVER +M: Upinder Malhi <umalhi@cisco.com> +S: Supported +F: drivers/infiniband/hw/usnic + CIRRUS LOGIC EP93XX ETHERNET DRIVER M: Hartley Sweeten <hsweeten@visionengravers.com> L: netdev@vger.kernel.org @@ -7528,7 +7533,7 @@ S: Maintained F: drivers/scsi/sr* SCSI RDMA PROTOCOL (SRP) INITIATOR -M: David Dillow <dillowda@ornl.gov> +M: Bart Van Assche <bvanassche@acm.org> L: linux-rdma@vger.kernel.org S: Supported W: http://www.openfabrics.org diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index 5ceda710f516..77089399359b 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -3,6 +3,8 @@ menuconfig INFINIBAND depends on PCI || BROKEN depends on HAS_IOMEM depends on NET + depends on INET + depends on m || IPV6 != m ---help--- Core support for InfiniBand (IB). Make sure to also select any protocols you wish to use as well as drivers for your @@ -38,8 +40,7 @@ config INFINIBAND_USER_MEM config INFINIBAND_ADDR_TRANS bool - depends on INET - depends on !(INFINIBAND = y && IPV6 = m) + depends on INFINIBAND default y source "drivers/infiniband/hw/mthca/Kconfig" @@ -53,6 +54,7 @@ source "drivers/infiniband/hw/mlx4/Kconfig" source "drivers/infiniband/hw/mlx5/Kconfig" source "drivers/infiniband/hw/nes/Kconfig" source "drivers/infiniband/hw/ocrdma/Kconfig" +source "drivers/infiniband/hw/usnic/Kconfig" source "drivers/infiniband/ulp/ipoib/Kconfig" diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile index 1fe69888515f..bf508b5550c4 100644 --- a/drivers/infiniband/Makefile +++ b/drivers/infiniband/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_MLX4_INFINIBAND) += hw/mlx4/ obj-$(CONFIG_MLX5_INFINIBAND) += hw/mlx5/ obj-$(CONFIG_INFINIBAND_NES) += hw/nes/ obj-$(CONFIG_INFINIBAND_OCRDMA) += hw/ocrdma/ +obj-$(CONFIG_INFINIBAND_USNIC) += hw/usnic/ obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/ obj-$(CONFIG_INFINIBAND_SRP) += ulp/srp/ obj-$(CONFIG_INFINIBAND_SRPT) += ulp/srpt/ diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile index c8bbaef1becb..3ab3865544bb 100644 --- a/drivers/infiniband/core/Makefile +++ b/drivers/infiniband/core/Makefile @@ -1,8 +1,9 @@ -infiniband-$(CONFIG_INFINIBAND_ADDR_TRANS) := ib_addr.o rdma_cm.o +infiniband-$(CONFIG_INFINIBAND_ADDR_TRANS) := rdma_cm.o user_access-$(CONFIG_INFINIBAND_ADDR_TRANS) := rdma_ucm.o obj-$(CONFIG_INFINIBAND) += ib_core.o ib_mad.o ib_sa.o \ - ib_cm.o iw_cm.o $(infiniband-y) + ib_cm.o iw_cm.o ib_addr.o \ + $(infiniband-y) obj-$(CONFIG_INFINIBAND_USER_MAD) += ib_umad.o obj-$(CONFIG_INFINIBAND_USER_ACCESS) += ib_uverbs.o ib_ucm.o \ $(user_access-y) diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index e90f2b2eabd7..8172d37f9add 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -86,6 +86,8 @@ int rdma_addr_size(struct sockaddr *addr) } EXPORT_SYMBOL(rdma_addr_size); +static struct rdma_addr_client self; + void rdma_addr_register_client(struct rdma_addr_client *client) { atomic_set(&client->refcount, 1); @@ -119,7 +121,8 @@ int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev, } EXPORT_SYMBOL(rdma_copy_addr); -int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) +int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr, + u16 *vlan_id) { struct net_device *dev; int ret = -EADDRNOTAVAIL; @@ -142,6 +145,8 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) return ret; ret = rdma_copy_addr(dev_addr, dev, NULL); + if (vlan_id) + *vlan_id = rdma_vlan_dev_vlan_id(dev); dev_put(dev); break; @@ -153,6 +158,8 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) &((struct sockaddr_in6 *) addr)->sin6_addr, dev, 1)) { ret = rdma_copy_addr(dev_addr, dev, NULL); + if (vlan_id) + *vlan_id = rdma_vlan_dev_vlan_id(dev); break; } } @@ -238,7 +245,7 @@ static int addr4_resolve(struct sockaddr_in *src_in, src_in->sin_addr.s_addr = fl4.saddr; if (rt->dst.dev->flags & IFF_LOOPBACK) { - ret = rdma_translate_ip((struct sockaddr *) dst_in, addr); + ret = rdma_translate_ip((struct sockaddr *)dst_in, addr, NULL); if (!ret) memcpy(addr->dst_dev_addr, addr->src_dev_addr, MAX_ADDR_LEN); goto put; @@ -286,7 +293,7 @@ static int addr6_resolve(struct sockaddr_in6 *src_in, } if (dst->dev->flags & IFF_LOOPBACK) { - ret = rdma_translate_ip((struct sockaddr *) dst_in, addr); + ret = rdma_translate_ip((struct sockaddr *)dst_in, addr, NULL); if (!ret) memcpy(addr->dst_dev_addr, addr->src_dev_addr, MAX_ADDR_LEN); goto put; @@ -437,6 +444,88 @@ void rdma_addr_cancel(struct rdma_dev_addr *addr) } EXPORT_SYMBOL(rdma_addr_cancel); +struct resolve_cb_context { + struct rdma_dev_addr *addr; + struct completion comp; +}; + +static void resolve_cb(int status, struct sockaddr *src_addr, + struct rdma_dev_addr *addr, void *context) +{ + memcpy(((struct resolve_cb_context *)context)->addr, addr, sizeof(struct + rdma_dev_addr)); + complete(&((struct resolve_cb_context *)context)->comp); +} + +int rdma_addr_find_dmac_by_grh(union ib_gid *sgid, union ib_gid *dgid, u8 *dmac, + u16 *vlan_id) +{ + int ret = 0; + struct rdma_dev_addr dev_addr; + struct resolve_cb_context ctx; + struct net_device *dev; + + union { + struct sockaddr _sockaddr; + struct sockaddr_in _sockaddr_in; + struct sockaddr_in6 _sockaddr_in6; + } sgid_addr, dgid_addr; + + + ret = rdma_gid2ip(&sgid_addr._sockaddr, sgid); + if (ret) + return ret; + + ret = rdma_gid2ip(&dgid_addr._sockaddr, dgid); + if (ret) + return ret; + + memset(&dev_addr, 0, sizeof(dev_addr)); + + ctx.addr = &dev_addr; + init_completion(&ctx.comp); + ret = rdma_resolve_ip(&self, &sgid_addr._sockaddr, &dgid_addr._sockaddr, + &dev_addr, 1000, resolve_cb, &ctx); + if (ret) + return ret; + + wait_for_completion(&ctx.comp); + + memcpy(dmac, dev_addr.dst_dev_addr, ETH_ALEN); + dev = dev_get_by_index(&init_net, dev_addr.bound_dev_if); + if (!dev) + return -ENODEV; + if (vlan_id) + *vlan_id = rdma_vlan_dev_vlan_id(dev); + dev_put(dev); + return ret; +} +EXPORT_SYMBOL(rdma_addr_find_dmac_by_grh); + +int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id) +{ + int ret = 0; + struct rdma_dev_addr dev_addr; + union { + struct sockaddr _sockad |