From e9319b0cb00d4d68792fdae37e81e316cb632cb9 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 27 Feb 2012 09:15:08 -0800 Subject: IB/core: Fix SDR rates in sysfs Commit 71eeba16 ("IB: Add new InfiniBand link speeds") introduced a bug where eg the rate for IB 4X SDR links iss displayed as "8.5 Gb/sec" instead of "10 Gb/sec" as it used to be. Fix that. Reported-by: Or Gerlitz Signed-off-by: Roland Dreier --- drivers/infiniband/core/sysfs.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'drivers/infiniband/core/sysfs.c') diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index c61bca30fd2d..a860b6ddbb61 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -179,33 +179,37 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, { struct ib_port_attr attr; char *speed = ""; - int rate; + int rate = -1; /* in deci-Gb/sec */ ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; - rate = (25 * attr.active_speed) / 10; - switch (attr.active_speed) { + case 1: + /* SDR */ + rate = 25; + break; case 2: speed = " DDR"; + rate = 50; break; case 4: speed = " QDR"; + rate = 100; break; case 8: speed = " FDR10"; - rate = 10; + rate = 100; break; case 16: speed = " FDR"; - rate = 14; + rate = 140; break; case 32: speed = " EDR"; - rate = 25; + rate = 250; break; } @@ -214,7 +218,7 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, return -EINVAL; return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", - rate, (attr.active_speed == 1) ? ".5" : "", + rate / 10, rate % 10 ? ".5" : "", ib_width_enum_to_int(attr.active_width), speed); } -- cgit v1.2.3-59-g8ed1b From 2e96691c31ecf749f48aa94ea837b95dd656f5c2 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Tue, 28 Feb 2012 18:49:50 +0200 Subject: IB: Use central enum for speed instead of hard-coded values The kernel IB stack uses one enumeration for IB speed, which wasn't explicitly specified in the verbs header file. Add that enum, and use it all over the code. The IB speed/width notation is also used by iWARP and IBoE HW drivers, which use the convention of rate = speed * width to advertise their port link rate. Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- drivers/infiniband/core/sysfs.c | 13 ++++++------- drivers/infiniband/hw/amso1100/c2_provider.c | 2 +- drivers/infiniband/hw/cxgb3/iwch_provider.c | 2 +- drivers/infiniband/hw/cxgb4/provider.c | 2 +- drivers/infiniband/hw/ehca/ehca_hca.c | 2 +- drivers/infiniband/hw/mlx4/main.c | 10 +++++----- drivers/infiniband/hw/nes/nes_verbs.c | 2 +- include/rdma/ib_verbs.h | 9 +++++++++ 8 files changed, 25 insertions(+), 17 deletions(-) (limited to 'drivers/infiniband/core/sysfs.c') diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index a860b6ddbb61..83b720ef6c34 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -187,27 +187,26 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, return ret; switch (attr.active_speed) { - case 1: - /* SDR */ + case IB_SPEED_SDR: rate = 25; break; - case 2: + case IB_SPEED_DDR: speed = " DDR"; rate = 50; break; - case 4: + case IB_SPEED_QDR: speed = " QDR"; rate = 100; break; - case 8: + case IB_SPEED_FDR10: speed = " FDR10"; rate = 100; break; - case 16: + case IB_SPEED_FDR: speed = " FDR"; rate = 140; break; - case 32: + case IB_SPEED_EDR: speed = " EDR"; rate = 250; break; diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c index 12f923d64e42..07eb3a8067d8 100644 --- a/drivers/infiniband/hw/amso1100/c2_provider.c +++ b/drivers/infiniband/hw/amso1100/c2_provider.c @@ -94,7 +94,7 @@ static int c2_query_port(struct ib_device *ibdev, props->pkey_tbl_len = 1; props->qkey_viol_cntr = 0; props->active_width = 1; - props->active_speed = 1; + props->active_speed = IB_SPEED_SDR; return 0; } diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index 37c224fc3ad9..0bdf09aa6f42 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -1227,7 +1227,7 @@ static int iwch_query_port(struct ib_device *ibdev, props->gid_tbl_len = 1; props->pkey_tbl_len = 1; props->active_width = 2; - props->active_speed = 2; + props->active_speed = IB_SPEED_DDR; props->max_msg_sz = -1; return 0; diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c index 247fe706e7fa..be1c18f44400 100644 --- a/drivers/infiniband/hw/cxgb4/provider.c +++ b/drivers/infiniband/hw/cxgb4/provider.c @@ -329,7 +329,7 @@ static int c4iw_query_port(struct ib_device *ibdev, u8 port, props->gid_tbl_len = 1; props->pkey_tbl_len = 1; props->active_width = 2; - props->active_speed = 2; + props->active_speed = IB_SPEED_DDR; props->max_msg_sz = -1; return 0; diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c index 73edc3668663..9ed4d2588304 100644 --- a/drivers/infiniband/hw/ehca/ehca_hca.c +++ b/drivers/infiniband/hw/ehca/ehca_hca.c @@ -233,7 +233,7 @@ int ehca_query_port(struct ib_device *ibdev, props->phys_state = 5; props->state = rblock->state; props->active_width = IB_WIDTH_12X; - props->active_speed = 0x1; + props->active_speed = IB_SPEED_SDR; } query_port1: diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 7b445df6a667..6ff6bdf28a3a 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -215,16 +215,16 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port, switch (ext_active_speed) { case 1: - props->active_speed = 16; /* FDR */ + props->active_speed = IB_SPEED_FDR; break; case 2: - props->active_speed = 32; /* EDR */ + props->active_speed = IB_SPEED_EDR; break; } } /* If reported active speed is QDR, check if is FDR-10 */ - if (props->active_speed == 4) { + if (props->active_speed == IB_SPEED_QDR) { if (to_mdev(ibdev)->dev->caps.ext_port_cap[port] & MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { init_query_mad(in_mad); @@ -238,7 +238,7 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port, /* Checking LinkSpeedActive for FDR-10 */ if (out_mad->data[15] & 0x1) - props->active_speed = 8; + props->active_speed = IB_SPEED_FDR10; } } @@ -259,7 +259,7 @@ static int eth_link_query_port(struct ib_device *ibdev, u8 port, enum ib_mtu tmp; props->active_width = IB_WIDTH_1X; - props->active_speed = 4; + props->active_speed = IB_SPEED_QDR; props->port_cap_flags = IB_PORT_CM_SUP; props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c index 0927b5cc65d3..8b8812de4b5c 100644 --- a/drivers/infiniband/hw/nes/nes_verbs.c +++ b/drivers/infiniband/hw/nes/nes_verbs.c @@ -597,7 +597,7 @@ static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr props->pkey_tbl_len = 1; props->qkey_viol_cntr = 0; props->active_width = IB_WIDTH_4X; - props->active_speed = 1; + props->active_speed = IB_SPEED_SDR; props->max_msg_sz = 0x80000000; return 0; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index bf5daafe8ecc..ff22a73e0937 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -239,6 +239,15 @@ static inline int ib_width_enum_to_int(enum ib_port_width width) } } +enum ib_port_speed { + IB_SPEED_SDR = 1, + IB_SPEED_DDR = 2, + IB_SPEED_QDR = 4, + IB_SPEED_FDR10 = 8, + IB_SPEED_FDR = 16, + IB_SPEED_EDR = 32 +}; + struct ib_protocol_stats { /* TBD... */ }; -- cgit v1.2.3-59-g8ed1b