From ebddd97afb89cb1e88cc037aef2913ad4723a59f Mon Sep 17 00:00:00 2001 From: Ganesh Goudar Date: Fri, 10 Aug 2018 14:47:01 +0530 Subject: cxgb4: add support to display DCB info display Data Center bridging information in debug fs. Signed-off-by: Casey Leedom Signed-off-by: Ganesh Goudar Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 1 + drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c | 2 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 193 +++++++++++++++++++++ drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 3 +- 4 files changed, 197 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 3da9299cd786..76d16747f513 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -1853,4 +1853,5 @@ void cxgb4_write_sgl(const struct sk_buff *skb, struct sge_txq *q, void cxgb4_ring_tx_db(struct adapter *adap, struct sge_txq *q, int n); int t4_set_vlan_acl(struct adapter *adap, unsigned int mbox, unsigned int vf, u16 vlan); +int cxgb4_dcb_enabled(const struct net_device *dev); #endif /* __CXGB4_H__ */ diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c index 4e7f72b17e82..b34f0f077a31 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c @@ -22,7 +22,7 @@ /* DCBx version control */ -static const char * const dcb_ver_array[] = { +const char * const dcb_ver_array[] = { "Unknown", "DCBx-CIN", "DCBx-CEE 1.01", diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 6f312e03432f..0f72f9c4ec74 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -2414,6 +2414,196 @@ static const struct file_operations rss_vf_config_debugfs_fops = { .release = seq_release_private }; +#ifdef CONFIG_CHELSIO_T4_DCB +extern char *dcb_ver_array[]; + +/* Data Center Briging information for each port. + */ +static int dcb_info_show(struct seq_file *seq, void *v) +{ + struct adapter *adap = seq->private; + + if (v == SEQ_START_TOKEN) { + seq_puts(seq, "Data Center Bridging Information\n"); + } else { + int port = (uintptr_t)v - 2; + struct net_device *dev = adap->port[port]; + struct port_info *pi = netdev2pinfo(dev); + struct port_dcb_info *dcb = &pi->dcb; + + seq_puts(seq, "\n"); + seq_printf(seq, "Port: %d (DCB negotiated: %s)\n", + port, + cxgb4_dcb_enabled(dev) ? "yes" : "no"); + + if (cxgb4_dcb_enabled(dev)) + seq_printf(seq, "[ DCBx Version %s ]\n", + dcb_ver_array[dcb->dcb_version]); + + if (dcb->msgs) { + int i; + + seq_puts(seq, "\n Index\t\t\t :\t"); + for (i = 0; i < 8; i++) + seq_printf(seq, " %3d", i); + seq_puts(seq, "\n\n"); + } + + if (dcb->msgs & CXGB4_DCB_FW_PGID) { + int prio, pgid; + + seq_puts(seq, " Priority Group IDs\t :\t"); + for (prio = 0; prio < 8; prio++) { + pgid = (dcb->pgid >> 4 * (7 - prio)) & 0xf; + seq_printf(seq, " %3d", pgid); + } + seq_puts(seq, "\n"); + } + + if (dcb->msgs & CXGB4_DCB_FW_PGRATE) { + int pg; + + seq_puts(seq, " Priority Group BW(%)\t :\t"); + for (pg = 0; pg < 8; pg++) + seq_printf(seq, " %3d", dcb->pgrate[pg]); + seq_puts(seq, "\n"); + + if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) { + seq_puts(seq, " TSA Algorithm\t\t :\t"); + for (pg = 0; pg < 8; pg++) + seq_printf(seq, " %3d", dcb->tsa[pg]); + seq_puts(seq, "\n"); + } + + seq_printf(seq, " Max PG Traffic Classes [%3d ]\n", + dcb->pg_num_tcs_supported); + + seq_puts(seq, "\n"); + } + + if (dcb->msgs & CXGB4_DCB_FW_PRIORATE) { + int prio; + + seq_puts(seq, " Priority Rate\t:\t"); + for (prio = 0; prio < 8; prio++) + seq_printf(seq, " %3d", dcb->priorate[prio]); + seq_puts(seq, "\n"); + } + + if (dcb->msgs & CXGB4_DCB_FW_PFC) { + int prio; + + seq_puts(seq, " Priority Flow Control :\t"); + for (prio = 0; prio < 8; prio++) { + int pfcen = (dcb->pfcen >> 1 * (7 - prio)) + & 0x1; + seq_printf(seq, " %3d", pfcen); + } + seq_puts(seq, "\n"); + + seq_printf(seq, " Max PFC Traffic Classes [%3d ]\n", + dcb->pfc_num_tcs_supported); + + seq_puts(seq, "\n"); + } + + if (dcb->msgs & CXGB4_DCB_FW_APP_ID) { + int app, napps; + + seq_puts(seq, " Application Information:\n"); + seq_puts(seq, " App Priority Selection Protocol\n"); + seq_puts(seq, " Index Map Field ID\n"); + for (app = 0, napps = 0; + app < CXGB4_MAX_DCBX_APP_SUPPORTED; app++) { + struct app_priority *ap; + static const char * const sel_names[] = { + "Ethertype", + "Socket TCP", + "Socket UDP", + "Socket All", + }; + const char *sel_name; + + ap = &dcb->app_priority[app]; + /* skip empty slots */ + if (ap->protocolid == 0) + continue; + napps++; + + if (ap->sel_field < ARRAY_SIZE(sel_names)) + sel_name = sel_names[ap->sel_field]; + else + sel_name = "UNKNOWN"; + + seq_printf(seq, " %3d %#04x %-10s (%d) %#06x (%d)\n", + app, + ap->user_prio_map, + sel_name, ap->sel_field, + ap->protocolid, ap->protocolid); + } + if (napps == 0) + seq_puts(seq, " --- None ---\n"); + } + } + return 0; +} + +static inline void *dcb_info_get_idx(struct adapter *adap, loff_t pos) +{ + return (pos <= adap->params.nports + ? (void *)((uintptr_t)pos + 1) + : NULL); +} + +static void *dcb_info_start(struct seq_file *seq, loff_t *pos) +{ + struct adapter *adap = seq->private; + + return (*pos + ? dcb_info_get_idx(adap, *pos) + : SEQ_START_TOKEN); +} + +static void dcb_info_stop(struct seq_file *seq, void *v) +{ +} + +static void *dcb_info_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct adapter *adap = seq->private; + + (*pos)++; + return dcb_info_get_idx(adap, *pos); +} + +static const struct seq_operations dcb_info_seq_ops = { + .start = dcb_info_start, + .next = dcb_info_next, + .stop = dcb_info_stop, + .show = dcb_info_show +}; + +static int dcb_info_open(struct inode *inode, struct file *file) +{ + int res = seq_open(file, &dcb_info_seq_ops); + + if (!res) { + struct seq_file *seq = file->private_data; + + seq->private = inode->i_private; + } + return res; +} + +static const struct file_operations dcb_info_debugfs_fops = { + .owner = THIS_MODULE, + .open = dcb_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; +#endif /* CONFIG_CHELSIO_T4_DCB */ + static int resources_show(struct seq_file *seq, void *v) { struct adapter *adapter = seq->private; @@ -3435,6 +3625,9 @@ int t4_setup_debugfs(struct adapter *adap) { "rss_pf_config", &rss_pf_config_debugfs_fops, 0400, 0 }, { "rss_vf_config", &rss_vf_config_debugfs_fops, 0400, 0 }, { "resources", &resources_debugfs_fops, 0400, 0 }, +#ifdef CONFIG_CHELSIO_T4_DCB + { "dcb_info", &dcb_info_debugfs_fops, 0400, 0 }, +#endif { "sge_qinfo", &sge_qinfo_debugfs_fops, 0400, 0 }, { "ibq_tp0", &cim_ibq_fops, 0400, 0 }, { "ibq_tp1", &cim_ibq_fops, 0400, 1 }, diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 0f7ce71205e6..69590cff2a2d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -267,7 +267,7 @@ static void dcb_tx_queue_prio_enable(struct net_device *dev, int enable) } } -static int cxgb4_dcb_enabled(const struct net_device *dev) +int cxgb4_dcb_enabled(const struct net_device *dev) { struct port_info *pi = netdev_priv(dev); @@ -5658,6 +5658,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) #ifdef CONFIG_CHELSIO_T4_DCB netdev->dcbnl_ops = &cxgb4_dcb_ops; cxgb4_dcb_state_init(netdev); + cxgb4_dcb_version_init(netdev); #endif cxgb4_set_ethtool_ops(netdev); } -- cgit v1.2.3