diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 14:45:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 14:45:08 -0700 |
commit | aae3dbb4776e7916b6cd442d00159bea27a695c1 (patch) | |
tree | d074c5d783a81e7e2e084b1eba77f57459da7e37 /net/ncsi | |
parent | ec3604c7a5aae8953545b0d05495357009a960e5 (diff) | |
parent | 66bed8465a808400eb14562510e26c8818082cb8 (diff) | |
download | linux-aae3dbb4776e7916b6cd442d00159bea27a695c1.tar.gz linux-aae3dbb4776e7916b6cd442d00159bea27a695c1.tar.bz2 linux-aae3dbb4776e7916b6cd442d00159bea27a695c1.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) Support ipv6 checksum offload in sunvnet driver, from Shannon
Nelson.
2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
Dumazet.
3) Allow generic XDP to work on virtual devices, from John Fastabend.
4) Add bpf device maps and XDP_REDIRECT, which can be used to build
arbitrary switching frameworks using XDP. From John Fastabend.
5) Remove UFO offloads from the tree, gave us little other than bugs.
6) Remove the IPSEC flow cache, from Florian Westphal.
7) Support ipv6 route offload in mlxsw driver.
8) Support VF representors in bnxt_en, from Sathya Perla.
9) Add support for forward error correction modes to ethtool, from
Vidya Sagar Ravipati.
10) Add time filter for packet scheduler action dumping, from Jamal Hadi
Salim.
11) Extend the zerocopy sendmsg() used by virtio and tap to regular
sockets via MSG_ZEROCOPY. From Willem de Bruijn.
12) Significantly rework value tracking in the BPF verifier, from Edward
Cree.
13) Add new jump instructions to eBPF, from Daniel Borkmann.
14) Rework rtnetlink plumbing so that operations can be run without
taking the RTNL semaphore. From Florian Westphal.
15) Support XDP in tap driver, from Jason Wang.
16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.
17) Add Huawei hinic ethernet driver.
18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
Delalande.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
i40e: avoid NVM acquire deadlock during NVM update
drivers: net: xgene: Remove return statement from void function
drivers: net: xgene: Configure tx/rx delay for ACPI
drivers: net: xgene: Read tx/rx delay for ACPI
rocker: fix kcalloc parameter order
rds: Fix non-atomic operation on shared flag variable
net: sched: don't use GFP_KERNEL under spin lock
vhost_net: correctly check tx avail during rx busy polling
net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
rxrpc: Make service connection lookup always check for retry
net: stmmac: Delete dead code for MDIO registration
gianfar: Fix Tx flow control deactivation
cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
cxgb4: Fix pause frame count in t4_get_port_stats
cxgb4: fix memory leak
tun: rename generic_xdp to skb_xdp
tun: reserve extra headroom only when XDP is set
net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
net: dsa: bcm_sf2: Advertise number of egress queues
...
Diffstat (limited to 'net/ncsi')
-rw-r--r-- | net/ncsi/internal.h | 11 | ||||
-rw-r--r-- | net/ncsi/ncsi-cmd.c | 10 | ||||
-rw-r--r-- | net/ncsi/ncsi-manage.c | 310 | ||||
-rw-r--r-- | net/ncsi/ncsi-pkt.h | 2 | ||||
-rw-r--r-- | net/ncsi/ncsi-rsp.c | 12 |
5 files changed, 334 insertions, 11 deletions
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h index 1308a56f2591..af3d636534ef 100644 --- a/net/ncsi/internal.h +++ b/net/ncsi/internal.h @@ -180,6 +180,7 @@ struct ncsi_channel { #define NCSI_CHANNEL_INACTIVE 1 #define NCSI_CHANNEL_ACTIVE 2 #define NCSI_CHANNEL_INVISIBLE 3 + bool reconfigure_needed; spinlock_t lock; /* Protect filters etc */ struct ncsi_package *package; struct ncsi_channel_version version; @@ -235,6 +236,9 @@ enum { ncsi_dev_state_probe_dp, ncsi_dev_state_config_sp = 0x0301, ncsi_dev_state_config_cis, + ncsi_dev_state_config_clear_vids, + ncsi_dev_state_config_svf, + ncsi_dev_state_config_ev, ncsi_dev_state_config_sma, ncsi_dev_state_config_ebf, #if IS_ENABLED(CONFIG_IPV6) @@ -253,6 +257,12 @@ enum { ncsi_dev_state_suspend_done }; +struct vlan_vid { + struct list_head list; + __be16 proto; + u16 vid; +}; + struct ncsi_dev_priv { struct ncsi_dev ndev; /* Associated NCSI device */ unsigned int flags; /* NCSI device flags */ @@ -276,6 +286,7 @@ struct ncsi_dev_priv { struct work_struct work; /* For channel management */ struct packet_type ptype; /* NCSI packet Rx handler */ struct list_head node; /* Form NCSI device list */ + struct list_head vlan_vids; /* List of active VLAN IDs */ }; struct ncsi_cmd_arg { diff --git a/net/ncsi/ncsi-cmd.c b/net/ncsi/ncsi-cmd.c index 5e03ed190e18..7567ca63aae2 100644 --- a/net/ncsi/ncsi-cmd.c +++ b/net/ncsi/ncsi-cmd.c @@ -139,9 +139,9 @@ static int ncsi_cmd_handler_svf(struct sk_buff *skb, struct ncsi_cmd_svf_pkt *cmd; cmd = skb_put_zero(skb, sizeof(*cmd)); - cmd->vlan = htons(nca->words[0]); - cmd->index = nca->bytes[2]; - cmd->enable = nca->bytes[3]; + cmd->vlan = htons(nca->words[1]); + cmd->index = nca->bytes[6]; + cmd->enable = nca->bytes[7]; ncsi_cmd_build_header(&cmd->cmd.common, nca); return 0; @@ -153,7 +153,7 @@ static int ncsi_cmd_handler_ev(struct sk_buff *skb, struct ncsi_cmd_ev_pkt *cmd; cmd = skb_put_zero(skb, sizeof(*cmd)); - cmd->mode = nca->bytes[0]; + cmd->mode = nca->bytes[3]; ncsi_cmd_build_header(&cmd->cmd.common, nca); return 0; @@ -228,7 +228,7 @@ static struct ncsi_cmd_handler { { NCSI_PKT_CMD_AE, 8, ncsi_cmd_handler_ae }, { NCSI_PKT_CMD_SL, 8, ncsi_cmd_handler_sl }, { NCSI_PKT_CMD_GLS, 0, ncsi_cmd_handler_default }, - { NCSI_PKT_CMD_SVF, 4, ncsi_cmd_handler_svf }, + { NCSI_PKT_CMD_SVF, 8, ncsi_cmd_handler_svf }, { NCSI_PKT_CMD_EV, 4, ncsi_cmd_handler_ev }, { NCSI_PKT_CMD_DV, 0, ncsi_cmd_handler_default }, { NCSI_PKT_CMD_SMA, 8, ncsi_cmd_handler_sma }, diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c index a3bd5fa8ad09..3fd3c39e6278 100644 --- a/net/ncsi/ncsi-manage.c +++ b/net/ncsi/ncsi-manage.c @@ -38,6 +38,25 @@ static inline int ncsi_filter_size(int table) return sizes[table]; } +u32 *ncsi_get_filter(struct ncsi_channel *nc, int table, int index) +{ + struct ncsi_channel_filter *ncf; + int size; + + ncf = nc->filters[table]; + if (!ncf) + return NULL; + + size = ncsi_filter_size(table); + if (size < 0) + return NULL; + + return ncf->data + size * index; +} + +/* Find the first active filter in a filter table that matches the given + * data parameter. If data is NULL, this returns the first active filter. + */ int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data) { struct ncsi_channel_filter *ncf; @@ -58,7 +77,7 @@ int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data) index = -1; while ((index = find_next_bit(bitmap, ncf->total, index + 1)) < ncf->total) { - if (!memcmp(ncf->data + size * index, data, size)) { + if (!data || !memcmp(ncf->data + size * index, data, size)) { spin_unlock_irqrestore(&nc->lock, flags); return index; } @@ -639,6 +658,95 @@ error: nd->state = ncsi_dev_state_functional; } +/* Check the VLAN filter bitmap for a set filter, and construct a + * "Set VLAN Filter - Disable" packet if found. + */ +static int clear_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc, + struct ncsi_cmd_arg *nca) +{ + int index; + u32 *data; + u16 vid; + + index = ncsi_find_filter(nc, NCSI_FILTER_VLAN, NULL); + if (index < 0) { + /* Filter table empty */ + return -1; + } + + data = ncsi_get_filter(nc, NCSI_FILTER_VLAN, index); + if (!data) { + netdev_err(ndp->ndev.dev, + "ncsi: failed to retrieve filter %d\n", index); + /* Set the VLAN id to 0 - this will still disable the entry in + * the filter table, but we won't know what it was. + */ + vid = 0; + } else { + vid = *(u16 *)data; + } + + netdev_printk(KERN_DEBUG, ndp->ndev.dev, + "ncsi: removed vlan tag %u at index %d\n", + vid, index + 1); + ncsi_remove_filter(nc, NCSI_FILTER_VLAN, index); + + nca->type = NCSI_PKT_CMD_SVF; + nca->words[1] = vid; + /* HW filter index starts at 1 */ + nca->bytes[6] = index + 1; + nca->bytes[7] = 0x00; + return 0; +} + +/* Find an outstanding VLAN tag and constuct a "Set VLAN Filter - Enable" + * packet. + */ +static int set_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc, + struct ncsi_cmd_arg *nca) +{ + struct vlan_vid *vlan = NULL; + int index = 0; + + list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) { + index = ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan->vid); + if (index < 0) { + /* New tag to add */ + netdev_printk(KERN_DEBUG, ndp->ndev.dev, + "ncsi: new vlan id to set: %u\n", + vlan->vid); + break; + } + netdev_printk(KERN_DEBUG, ndp->ndev.dev, + "vid %u already at filter pos %d\n", + vlan->vid, index); + } + + if (!vlan || index >= 0) { + netdev_printk(KERN_DEBUG, ndp->ndev.dev, + "no vlan ids left to set\n"); + return -1; + } + + index = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan->vid); + if (index < 0) { + netdev_err(ndp->ndev.dev, + "Failed to add new VLAN tag, error %d\n", index); + return -1; + } + + netdev_printk(KERN_DEBUG, ndp->ndev.dev, + "ncsi: set vid %u in packet, index %u\n", + vlan->vid, index + 1); + nca->type = NCSI_PKT_CMD_SVF; + nca->words[1] = vlan->vid; + /* HW filter index starts at 1 */ + nca->bytes[6] = index + 1; + nca->bytes[7] = 0x01; + + return 0; +} + static void ncsi_configure_channel(struct ncsi_dev_priv *ndp) { struct ncsi_dev *nd = &ndp->ndev; @@ -683,8 +791,11 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp) if (ret) goto error; - nd->state = ncsi_dev_state_config_sma; + nd->state = ncsi_dev_state_config_clear_vids; break; + case ncsi_dev_state_config_clear_vids: + case ncsi_dev_state_config_svf: + case ncsi_dev_state_config_ev: case ncsi_dev_state_config_sma: case ncsi_dev_state_config_ebf: #if IS_ENABLED(CONFIG_IPV6) @@ -699,11 +810,40 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp) nca.package = np->id; nca.channel = nc->id; + /* Clear any active filters on the channel before setting */ + if (nd->state == ncsi_dev_state_config_clear_vids) { + ret = clear_one_vid(ndp, nc, &nca); + if (ret) { + nd->state = ncsi_dev_state_config_svf; + schedule_work(&ndp->work); + break; + } + /* Repeat */ + nd->state = ncsi_dev_state_config_clear_vids; + /* Add known VLAN tags to the filter */ + } else if (nd->state == ncsi_dev_state_config_svf) { + ret = set_one_vid(ndp, nc, &nca); + if (ret) { + nd->state = ncsi_dev_state_config_ev; + schedule_work(&ndp->work); + break; + } + /* Repeat */ + nd->state = ncsi_dev_state_config_svf; + /* Enable/Disable the VLAN filter */ + } else if (nd->state == ncsi_dev_state_config_ev) { + if (list_empty(&ndp->vlan_vids)) { + nca.type = NCSI_PKT_CMD_DV; + } else { + nca.type = NCSI_PKT_CMD_EV; + nca.bytes[3] = NCSI_CAP_VLAN_NO; + } + nd->state = ncsi_dev_state_config_sma; + } else if (nd->state == ncsi_dev_state_config_sma) { /* Use first entry in unicast filter table. Note that * the MAC filter table starts from entry 1 instead of * 0. */ - if (nd->state == ncsi_dev_state_config_sma) { nca.type = NCSI_PKT_CMD_SMA; for (index = 0; index < 6; index++) nca.bytes[index] = dev->dev_addr[index]; @@ -751,6 +891,25 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp) break; case ncsi_dev_state_config_done: spin_lock_irqsave(&nc->lock, flags); + if (nc->reconfigure_needed) { + /* This channel's configuration has been updated + * part-way during the config state - start the + * channel configuration over + */ + nc->reconfigure_needed = false; + nc->state = NCSI_CHANNEL_INACTIVE; + spin_unlock_irqrestore(&nc->lock, flags); + + spin_lock_irqsave(&ndp->lock, flags); + list_add_tail_rcu(&nc->link, &ndp->channel_queue); + spin_unlock_irqrestore(&ndp->lock, flags); + + netdev_printk(KERN_DEBUG, dev, + "Dirty NCSI channel state reset\n"); + ncsi_process_next_channel(ndp); + break; + } + if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) { hot_nc = nc; nc->state = NCSI_CHANNEL_ACTIVE; @@ -1191,6 +1350,150 @@ static struct notifier_block ncsi_inet6addr_notifier = { }; #endif /* CONFIG_IPV6 */ +static int ncsi_kick_channels(struct ncsi_dev_priv *ndp) +{ + struct ncsi_dev *nd = &ndp->ndev; + struct ncsi_channel *nc; + struct ncsi_package *np; + unsigned long flags; + unsigned int n = 0; + + NCSI_FOR_EACH_PACKAGE(ndp, np) { + NCSI_FOR_EACH_CHANNEL(np, nc) { + spin_lock_irqsave(&nc->lock, flags); + + /* Channels may be busy, mark dirty instead of + * kicking if; + * a) not ACTIVE (configured) + * b) in the channel_queue (to be configured) + * c) it's ndev is in the config state + */ + if (nc->state != NCSI_CHANNEL_ACTIVE) { + if ((ndp->ndev.state & 0xff00) == + ncsi_dev_state_config || + !list_empty(&nc->link)) { + netdev_printk(KERN_DEBUG, nd->dev, + "ncsi: channel %p marked dirty\n", + nc); + nc->reconfigure_needed = true; + } + spin_unlock_irqrestore(&nc->lock, flags); + continue; + } + + spin_unlock_irqrestore(&nc->lock, flags); + + ncsi_stop_channel_monitor(nc); + spin_lock_irqsave(&nc->lock, flags); + nc->state = NCSI_CHANNEL_INACTIVE; + spin_unlock_irqrestore(&nc->lock, flags); + + spin_lock_irqsave(&ndp->lock, flags); + list_add_tail_rcu(&nc->link, &ndp->channel_queue); + spin_unlock_irqrestore(&ndp->lock, flags); + + netdev_printk(KERN_DEBUG, nd->dev, + "ncsi: kicked channel %p\n", nc); + n++; + } + } + + return n; +} + +int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) +{ + struct ncsi_channel_filter *ncf; + struct ncsi_dev_priv *ndp; + unsigned int n_vids = 0; + struct vlan_vid *vlan; + struct ncsi_dev *nd; + bool found = false; + + if (vid == 0) + return 0; + + nd = ncsi_find_dev(dev); + if (!nd) { + netdev_warn(dev, "ncsi: No net_device?\n"); + return 0; + } + + ndp = TO_NCSI_DEV_PRIV(nd); + ncf = ndp->hot_channel->filters[NCSI_FILTER_VLAN]; + + /* Add the VLAN id to our internal list */ + list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) { + n_vids++; + if (vlan->vid == vid) { + netdev_printk(KERN_DEBUG, dev, + "vid %u already registered\n", vid); + return 0; + } + } + + if (n_vids >= ncf->total) { + netdev_info(dev, + "NCSI Channel supports up to %u VLAN tags but %u are already set\n", + ncf->total, n_vids); + return -EINVAL; + } + + vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); + if (!vlan) + return -ENOMEM; + + vlan->proto = proto; + vlan->vid = vid; + list_add_rcu(&vlan->list, &ndp->vlan_vids); + + netdev_printk(KERN_DEBUG, dev, "Added new vid %u\n", vid); + + found = ncsi_kick_channels(ndp) != 0; + + return found ? ncsi_process_next_channel(ndp) : 0; +} +EXPORT_SYMBOL_GPL(ncsi_vlan_rx_add_vid); + +int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) +{ + struct vlan_vid *vlan, *tmp; + struct ncsi_dev_priv *ndp; + struct ncsi_dev *nd; + bool found = false; + + if (vid == 0) + return 0; + + nd = ncsi_find_dev(dev); + if (!nd) { + netdev_warn(dev, "ncsi: no net_device?\n"); + return 0; + } + + ndp = TO_NCSI_DEV_PRIV(nd); + + /* Remove the VLAN id from our internal list */ + list_for_each_entry_safe(vlan, tmp, &ndp->vlan_vids, list) + if (vlan->vid == vid) { + netdev_printk(KERN_DEBUG, dev, + "vid %u found, removing\n", vid); + list_del_rcu(&vlan->list); + found = true; + kfree(vlan); + } + + if (!found) { + netdev_err(dev, "ncsi: vid %u wasn't registered!\n", vid); + return -EINVAL; + } + + found = ncsi_kick_channels(ndp) != 0; + + return found ? ncsi_process_next_channel(ndp) : 0; +} +EXPORT_SYMBOL_GPL(ncsi_vlan_rx_kill_vid); + struct ncsi_dev *ncsi_register_dev(struct net_device *dev, void (*handler)(struct ncsi_dev *ndev)) { @@ -1215,6 +1518,7 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev, nd->handler = handler; ndp->pending_req_num = 0; INIT_LIST_HEAD(&ndp->channel_queue); + INIT_LIST_HEAD(&ndp->vlan_vids); INIT_WORK(&ndp->work, ncsi_dev_work); /* Initialize private NCSI device */ diff --git a/net/ncsi/ncsi-pkt.h b/net/ncsi/ncsi-pkt.h index 3ea49ed0a935..91b4b66438df 100644 --- a/net/ncsi/ncsi-pkt.h +++ b/net/ncsi/ncsi-pkt.h @@ -104,7 +104,7 @@ struct ncsi_cmd_svf_pkt { unsigned char index; /* VLAN table index */ unsigned char enable; /* Enable or disable */ __be32 checksum; /* Checksum */ - unsigned char pad[14]; + unsigned char pad[18]; }; /* Enable VLAN */ diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c index 087db775b3dc..265b9a892d41 100644 --- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -354,7 +354,8 @@ static int ncsi_rsp_handler_svf(struct ncsi_request *nr) /* Add or remove the VLAN filter */ if (!(cmd->enable & 0x1)) { - ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index); + /* HW indexes from 1 */ + ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1); } else { vlan = ntohs(cmd->vlan); ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); @@ -693,7 +694,14 @@ static int ncsi_rsp_handler_gc(struct ncsi_request *nr) ncf->index = i; ncf->total = cnt; - ncf->bitmap = 0x0ul; + if (i == NCSI_FILTER_VLAN) { + /* Set VLAN filters active so they are cleared in + * first configuration state + */ + ncf->bitmap = U64_MAX; + } else { + ncf->bitmap = 0x0ul; + } nc->filters[i] = ncf; } |