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-rw-r--r--net/ncsi/internal.h34
-rw-r--r--net/ncsi/ncsi-manage.c226
-rw-r--r--net/ncsi/ncsi-netlink.c20
-rw-r--r--net/ncsi/ncsi-rsp.c178
4 files changed, 147 insertions, 311 deletions
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index 8da84312cd3b..8055e3965cef 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -68,15 +68,6 @@ enum {
NCSI_MODE_MAX
};
-enum {
- NCSI_FILTER_BASE = 0,
- NCSI_FILTER_VLAN = 0,
- NCSI_FILTER_UC,
- NCSI_FILTER_MC,
- NCSI_FILTER_MIXED,
- NCSI_FILTER_MAX
-};
-
struct ncsi_channel_version {
u32 version; /* Supported BCD encoded NCSI version */
u32 alpha2; /* Supported BCD encoded NCSI version */
@@ -98,11 +89,18 @@ struct ncsi_channel_mode {
u32 data[8]; /* Data entries */
};
-struct ncsi_channel_filter {
- u32 index; /* Index of channel filters */
- u32 total; /* Total entries in the filter table */
- u64 bitmap; /* Bitmap of valid entries */
- u32 data[]; /* Data for the valid entries */
+struct ncsi_channel_mac_filter {
+ u8 n_uc;
+ u8 n_mc;
+ u8 n_mixed;
+ u64 bitmap;
+ unsigned char *addrs;
+};
+
+struct ncsi_channel_vlan_filter {
+ u8 n_vids;
+ u64 bitmap;
+ u16 *vids;
};
struct ncsi_channel_stats {
@@ -186,7 +184,9 @@ struct ncsi_channel {
struct ncsi_channel_version version;
struct ncsi_channel_cap caps[NCSI_CAP_MAX];
struct ncsi_channel_mode modes[NCSI_MODE_MAX];
- struct ncsi_channel_filter *filters[NCSI_FILTER_MAX];
+ /* Filtering Settings */
+ struct ncsi_channel_mac_filter mac_filter;
+ struct ncsi_channel_vlan_filter vlan_filter;
struct ncsi_channel_stats stats;
struct {
struct timer_list timer;
@@ -320,10 +320,6 @@ extern spinlock_t ncsi_dev_lock;
list_for_each_entry_rcu(nc, &np->channels, node)
/* Resources */
-u32 *ncsi_get_filter(struct ncsi_channel *nc, int table, int index);
-int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data);
-int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data);
-int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);
void ncsi_start_channel_monitor(struct ncsi_channel *nc);
void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index c3695ba0cf94..5561e221b71f 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -27,125 +27,6 @@
LIST_HEAD(ncsi_dev_list);
DEFINE_SPINLOCK(ncsi_dev_lock);
-static inline int ncsi_filter_size(int table)
-{
- int sizes[] = { 2, 6, 6, 6 };
-
- BUILD_BUG_ON(ARRAY_SIZE(sizes) != NCSI_FILTER_MAX);
- if (table < NCSI_FILTER_BASE || table >= NCSI_FILTER_MAX)
- return -EINVAL;
-
- 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;
- void *bitmap;
- int index, size;
- unsigned long flags;
-
- ncf = nc->filters[table];
- if (!ncf)
- return -ENXIO;
-
- size = ncsi_filter_size(table);
- if (size < 0)
- return size;
-
- spin_lock_irqsave(&nc->lock, flags);
- bitmap = (void *)&ncf->bitmap;
- index = -1;
- while ((index = find_next_bit(bitmap, ncf->total, index + 1))
- < ncf->total) {
- if (!data || !memcmp(ncf->data + size * index, data, size)) {
- spin_unlock_irqrestore(&nc->lock, flags);
- return index;
- }
- }
- spin_unlock_irqrestore(&nc->lock, flags);
-
- return -ENOENT;
-}
-
-int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data)
-{
- struct ncsi_channel_filter *ncf;
- int index, size;
- void *bitmap;
- unsigned long flags;
-
- size = ncsi_filter_size(table);
- if (size < 0)
- return size;
-
- index = ncsi_find_filter(nc, table, data);
- if (index >= 0)
- return index;
-
- ncf = nc->filters[table];
- if (!ncf)
- return -ENODEV;
-
- spin_lock_irqsave(&nc->lock, flags);
- bitmap = (void *)&ncf->bitmap;
- do {
- index = find_next_zero_bit(bitmap, ncf->total, 0);
- if (index >= ncf->total) {
- spin_unlock_irqrestore(&nc->lock, flags);
- return -ENOSPC;
- }
- } while (test_and_set_bit(index, bitmap));
-
- memcpy(ncf->data + size * index, data, size);
- spin_unlock_irqrestore(&nc->lock, flags);
-
- return index;
-}
-
-int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index)
-{
- struct ncsi_channel_filter *ncf;
- int size;
- void *bitmap;
- unsigned long flags;
-
- size = ncsi_filter_size(table);
- if (size < 0)
- return size;
-
- ncf = nc->filters[table];
- if (!ncf || index >= ncf->total)
- return -ENODEV;
-
- spin_lock_irqsave(&nc->lock, flags);
- bitmap = (void *)&ncf->bitmap;
- if (test_and_clear_bit(index, bitmap))
- memset(ncf->data + size * index, 0, size);
- spin_unlock_irqrestore(&nc->lock, flags);
-
- return 0;
-}
-
static void ncsi_report_link(struct ncsi_dev_priv *ndp, bool force_down)
{
struct ncsi_dev *nd = &ndp->ndev;
@@ -339,20 +220,13 @@ struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np, unsigned char id)
static void ncsi_remove_channel(struct ncsi_channel *nc)
{
struct ncsi_package *np = nc->package;
- struct ncsi_channel_filter *ncf;
unsigned long flags;
- int i;
- /* Release filters */
spin_lock_irqsave(&nc->lock, flags);
- for (i = 0; i < NCSI_FILTER_MAX; i++) {
- ncf = nc->filters[i];
- if (!ncf)
- continue;
- nc->filters[i] = NULL;
- kfree(ncf);
- }
+ /* Release filters */
+ kfree(nc->mac_filter.addrs);
+ kfree(nc->vlan_filter.vids);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
@@ -670,32 +544,26 @@ error:
static int clear_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
struct ncsi_cmd_arg *nca)
{
+ struct ncsi_channel_vlan_filter *ncf;
+ unsigned long flags;
+ void *bitmap;
int index;
- u32 *data;
u16 vid;
- index = ncsi_find_filter(nc, NCSI_FILTER_VLAN, NULL);
- if (index < 0) {
- /* Filter table empty */
- return -1;
- }
+ ncf = &nc->vlan_filter;
+ bitmap = &ncf->bitmap;
- 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;
+ spin_lock_irqsave(&nc->lock, flags);
+ index = find_next_bit(bitmap, ncf->n_vids, 0);
+ if (index >= ncf->n_vids) {
+ spin_unlock_irqrestore(&nc->lock, flags);
+ return -1;
}
+ vid = ncf->vids[index];
- 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);
+ clear_bit(index, bitmap);
+ ncf->vids[index] = 0;
+ spin_unlock_irqrestore(&nc->lock, flags);
nca->type = NCSI_PKT_CMD_SVF;
nca->words[1] = vid;
@@ -711,45 +579,55 @@ static int clear_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
static int set_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
struct ncsi_cmd_arg *nca)
{
+ struct ncsi_channel_vlan_filter *ncf;
struct vlan_vid *vlan = NULL;
- int index = 0;
+ unsigned long flags;
+ int i, index;
+ void *bitmap;
+ u16 vid;
+ if (list_empty(&ndp->vlan_vids))
+ return -1;
+
+ ncf = &nc->vlan_filter;
+ bitmap = &ncf->bitmap;
+
+ spin_lock_irqsave(&nc->lock, flags);
+
+ rcu_read_lock();
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);
+ vid = vlan->vid;
+ for (i = 0; i < ncf->n_vids; i++)
+ if (ncf->vids[i] == vid) {
+ vid = 0;
+ break;
+ }
+ if (vid)
break;
- }
- netdev_printk(KERN_DEBUG, ndp->ndev.dev,
- "vid %u already at filter pos %d\n",
- vlan->vid, index);
}
+ rcu_read_unlock();
- if (!vlan || index >= 0) {
- netdev_printk(KERN_DEBUG, ndp->ndev.dev,
- "no vlan ids left to set\n");
+ if (!vid) {
+ /* No VLAN ID is not set */
+ spin_unlock_irqrestore(&nc->lock, flags);
return -1;
}
- index = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan->vid);
- if (index < 0) {
+ index = find_next_zero_bit(bitmap, ncf->n_vids, 0);
+ if (index < 0 || index >= ncf->n_vids) {
netdev_err(ndp->ndev.dev,
- "Failed to add new VLAN tag, error %d\n", index);
- if (index == -ENOSPC)
- netdev_err(ndp->ndev.dev,
- "Channel %u already has all VLAN filters set\n",
- nc->id);
+ "Channel %u already has all VLAN filters set\n",
+ nc->id);
+ spin_unlock_irqrestore(&nc->lock, flags);
return -1;
}
- netdev_printk(KERN_DEBUG, ndp->ndev.dev,
- "NCSI: set vid %u in packet, index %u\n",
- vlan->vid, index + 1);
+ ncf->vids[index] = vid;
+ set_bit(index, bitmap);
+ spin_unlock_irqrestore(&nc->lock, flags);
+
nca->type = NCSI_PKT_CMD_SVF;
- nca->words[1] = vlan->vid;
+ nca->words[1] = vid;
/* HW filter index starts at 1 */
nca->bytes[6] = index + 1;
nca->bytes[7] = 0x01;
diff --git a/net/ncsi/ncsi-netlink.c b/net/ncsi/ncsi-netlink.c
index 8d7e849d4825..b09ef77bf4cd 100644
--- a/net/ncsi/ncsi-netlink.c
+++ b/net/ncsi/ncsi-netlink.c
@@ -58,10 +58,9 @@ static int ncsi_write_channel_info(struct sk_buff *skb,
struct ncsi_dev_priv *ndp,
struct ncsi_channel *nc)
{
- struct nlattr *vid_nest;
- struct ncsi_channel_filter *ncf;
+ struct ncsi_channel_vlan_filter *ncf;
struct ncsi_channel_mode *m;
- u32 *data;
+ struct nlattr *vid_nest;
int i;
nla_put_u32(skb, NCSI_CHANNEL_ATTR_ID, nc->id);
@@ -79,18 +78,13 @@ static int ncsi_write_channel_info(struct sk_buff *skb,
vid_nest = nla_nest_start(skb, NCSI_CHANNEL_ATTR_VLAN_LIST);
if (!vid_nest)
return -ENOMEM;
- ncf = nc->filters[NCSI_FILTER_VLAN];
+ ncf = &nc->vlan_filter;
i = -1;
- if (ncf) {
- while ((i = find_next_bit((void *)&ncf->bitmap, ncf->total,
- i + 1)) < ncf->total) {
- data = ncsi_get_filter(nc, NCSI_FILTER_VLAN, i);
- /* Uninitialised channels will have 'zero' vlan ids */
- if (!data || !*data)
- continue;
+ while ((i = find_next_bit((void *)&ncf->bitmap, ncf->n_vids,
+ i + 1)) < ncf->n_vids) {
+ if (ncf->vids[i])
nla_put_u16(skb, NCSI_CHANNEL_ATTR_VLAN_ID,
- *(u16 *)data);
- }
+ ncf->vids[i]);
}
nla_nest_end(skb, vid_nest);
diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
index efd933ff5570..ce9497966ebe 100644
--- a/net/ncsi/ncsi-rsp.c
+++ b/net/ncsi/ncsi-rsp.c
@@ -334,9 +334,9 @@ static int ncsi_rsp_handler_svf(struct ncsi_request *nr)
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
- struct ncsi_channel_filter *ncf;
- unsigned short vlan;
- int ret;
+ struct ncsi_channel_vlan_filter *ncf;
+ unsigned long flags;
+ void *bitmap;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
@@ -346,22 +346,23 @@ static int ncsi_rsp_handler_svf(struct ncsi_request *nr)
return -ENODEV;
cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd);
- ncf = nc->filters[NCSI_FILTER_VLAN];
- if (!ncf)
- return -ENOENT;
- if (cmd->index >= ncf->total)
+ ncf = &nc->vlan_filter;
+ if (cmd->index > ncf->n_vids)
return -ERANGE;
- /* Add or remove the VLAN filter */
+ /* Add or remove the VLAN filter. Remember HW indexes from 1 */
+ spin_lock_irqsave(&nc->lock, flags);
+ bitmap = &ncf->bitmap;
if (!(cmd->enable & 0x1)) {
- /* HW indexes from 1 */
- ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1);
+ if (test_and_clear_bit(cmd->index - 1, bitmap))
+ ncf->vids[cmd->index - 1] = 0;
} else {
- vlan = ntohs(cmd->vlan);
- ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
+ set_bit(cmd->index - 1, bitmap);
+ ncf->vids[cmd->index - 1] = ntohs(cmd->vlan);
}
+ spin_unlock_irqrestore(&nc->lock, flags);
- return ret;
+ return 0;
}
static int ncsi_rsp_handler_ev(struct ncsi_request *nr)
@@ -422,8 +423,12 @@ static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
- struct ncsi_channel_filter *ncf;
+ struct ncsi_channel_mac_filter *ncf;
+ unsigned long flags;
void *bitmap;
+ bool enabled;
+ int index;
+
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
@@ -436,31 +441,23 @@ static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
* isn't supported yet.
*/
cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd);
- switch (cmd->at_e >> 5) {
- case 0x0: /* UC address */
- ncf = nc->filters[NCSI_FILTER_UC];
- break;
- case 0x1: /* MC address */
- ncf = nc->filters[NCSI_FILTER_MC];
- break;
- default:
- return -EINVAL;
- }
+ enabled = cmd->at_e & 0x1;
+ ncf = &nc->mac_filter;
+ bitmap = &ncf->bitmap;
- /* Sanity check on the filter */
- if (!ncf)
- return -ENOENT;
- else if (cmd->index >= ncf->total)
+ if (cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed)
return -ERANGE;
- bitmap = &ncf->bitmap;
- if (cmd->at_e & 0x1) {
- set_bit(cmd->index, bitmap);
- memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6);
+ index = (cmd->index - 1) * ETH_ALEN;
+ spin_lock_irqsave(&nc->lock, flags);
+ if (enabled) {
+ set_bit(cmd->index - 1, bitmap);
+ memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN);
} else {
- clear_bit(cmd->index, bitmap);
- memset(ncf->data + 6 * cmd->index, 0, 6);
+ clear_bit(cmd->index - 1, bitmap);
+ memset(&ncf->addrs[index], 0, ETH_ALEN);
}
+ spin_unlock_irqrestore(&nc->lock, flags);
return 0;
}
@@ -631,9 +628,7 @@ static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
struct ncsi_rsp_gc_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
- struct ncsi_channel_filter *ncf;
- size_t size, entry_size;
- int cnt, i;
+ size_t size;
/* Find the channel */
rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
@@ -655,64 +650,40 @@ static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
NCSI_CAP_VLAN_MASK;
- /* Build filters */
- for (i = 0; i < NCSI_FILTER_MAX; i++) {
- switch (i) {
- case NCSI_FILTER_VLAN:
- cnt = rsp->vlan_cnt;
- entry_size = 2;
- break;
- case NCSI_FILTER_MIXED:
- cnt = rsp->mixed_cnt;
- entry_size = 6;
- break;
- case NCSI_FILTER_MC:
- cnt = rsp->mc_cnt;
- entry_size = 6;
- break;
- case NCSI_FILTER_UC:
- cnt = rsp->uc_cnt;
- entry_size = 6;
- break;
- default:
- continue;
- }
-
- if (!cnt || nc->filters[i])
- continue;
-
- size = sizeof(*ncf) + cnt * entry_size;
- ncf = kzalloc(size, GFP_ATOMIC);
- if (!ncf) {
- pr_warn("%s: Cannot alloc filter table (%d)\n",
- __func__, i);
- return -ENOMEM;
- }
-
- ncf->index = i;
- ncf->total = cnt;
- 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;
- }
+ size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN;
+ nc->mac_filter.addrs = kzalloc(size, GFP_KERNEL);
+ if (!nc->mac_filter.addrs)
+ return -ENOMEM;
+ nc->mac_filter.n_uc = rsp->uc_cnt;
+ nc->mac_filter.n_mc = rsp->mc_cnt;
+ nc->mac_filter.n_mixed = rsp->mixed_cnt;
+
+ nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt,
+ sizeof(*nc->vlan_filter.vids),
+ GFP_KERNEL);
+ if (!nc->vlan_filter.vids)
+ return -ENOMEM;
+ /* Set VLAN filters active so they are cleared in the first
+ * configuration state
+ */
+ nc->vlan_filter.bitmap = U64_MAX;
+ nc->vlan_filter.n_vids = rsp->vlan_cnt;
return 0;
}
static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
{
- struct ncsi_rsp_gp_pkt *rsp;
+ struct ncsi_channel_vlan_filter *ncvf;
+ struct ncsi_channel_mac_filter *ncmf;
struct ncsi_dev_priv *ndp = nr->ndp;
+ struct ncsi_rsp_gp_pkt *rsp;
struct ncsi_channel *nc;
- unsigned short enable, vlan;
+ unsigned short enable;
unsigned char *pdata;
- int table, i;
+ unsigned long flags;
+ void *bitmap;
+ int i;
/* Find the channel */
rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp);
@@ -746,36 +717,33 @@ static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
/* MAC addresses filter table */
pdata = (unsigned char *)rsp + 48;
enable = rsp->mac_enable;
+ ncmf = &nc->mac_filter;
+ spin_lock_irqsave(&nc->lock, flags);
+ bitmap = &ncmf->bitmap;
for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
- if (i >= (nc->filters[NCSI_FILTER_UC]->total +
- nc->filters[NCSI_FILTER_MC]->total))
- table = NCSI_FILTER_MIXED;
- else if (i >= nc->filters[NCSI_FILTER_UC]->total)
- table = NCSI_FILTER_MC;
- else
- table = NCSI_FILTER_UC;
-
if (!(enable & (0x1 << i)))
- continue;
-
- if (ncsi_find_filter(nc, table, pdata) >= 0)
- continue;
+ clear_bit(i, bitmap);
+ else
+ set_bit(i, bitmap);
- ncsi_add_filter(nc, table, pdata);
+ memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN);
}
+ spin_unlock_irqrestore(&nc->lock, flags);
/* VLAN filter table */
enable = ntohs(rsp->vlan_enable);
+ ncvf = &nc->vlan_filter;
+ bitmap = &ncvf->bitmap;
+ spin_lock_irqsave(&nc->lock, flags);
for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
if (!(enable & (0x1 << i)))
- continue;
-
- vlan = ntohs(*(__be16 *)pdata);
- if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0)
- continue;
+ clear_bit(i, bitmap);
+ else
+ set_bit(i, bitmap);
- ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
+ ncvf->vids[i] = ntohs(*(__be16 *)pdata);
}
+ spin_unlock_irqrestore(&nc->lock, flags);
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.