Use more compact LIST instead of TAILQ for session hash.
Add all listening hooks into LIST to simplify searches. Use ng_findhook() instead of own equal implementation.
This commit is contained in:
Alexander Motin
parent
67196661ab
commit
dda30f129e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=176775
@ -235,7 +235,7 @@ struct sess_con {
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ng_ID_t creator; /* who to notify */
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struct pppoe_full_hdr pkt_hdr; /* used when connected */
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negp neg; /* used when negotiating */
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TAILQ_ENTRY(sess_con) sessions;
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LIST_ENTRY(sess_con) sessions;
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};
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typedef struct sess_con *sessp;
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@ -244,7 +244,7 @@ typedef struct sess_con *sessp;
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struct sess_hash_entry {
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struct mtx mtx;
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TAILQ_HEAD(hhead, sess_con) head;
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LIST_HEAD(hhead, sess_con) head;
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};
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/*
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@ -260,6 +260,7 @@ struct PPPoE {
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#define COMPAT_3COM 0x00000001
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#define COMPAT_DLINK 0x00000002
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struct ether_header eh;
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LIST_HEAD(, sess_con) listeners;
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struct sess_hash_entry sesshash[SESSHASHSIZE];
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};
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typedef struct PPPoE *priv_p;
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@ -415,21 +416,11 @@ make_packet(sessp sp) {
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static hook_p
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pppoe_match_svc(node_p node, const struct pppoe_tag *tag)
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{
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hook_p hook;
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const priv_p privp = NG_NODE_PRIVATE(node);
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sessp sp;
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LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
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sessp sp = NG_HOOK_PRIVATE(hook);
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negp neg;
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/* Skip any nonsession hook. */
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if (sp == NULL)
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continue;
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/* Skip any sessions which are not in LISTEN mode. */
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if (sp->state != PPPOE_LISTENING)
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continue;
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neg = sp->neg;
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LIST_FOREACH(sp, &privp->listeners, sessions) {
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negp neg = sp->neg;
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/* Empty Service-Name matches any service. */
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if (neg->service_len == 0)
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@ -447,9 +438,10 @@ pppoe_match_svc(node_p node, const struct pppoe_tag *tag)
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ntohs(tag->tag_len)) == 0)
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break;
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}
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CTR3(KTR_NET, "%20s: matched %p for %s", __func__, hook, tag->tag_data);
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CTR3(KTR_NET, "%20s: matched %p for %s", __func__,
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sp?sp->hook:NULL, tag->tag_data);
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return (hook);
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return (sp?sp->hook:NULL);
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}
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/*
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@ -461,27 +453,17 @@ pppoe_match_svc(node_p node, const struct pppoe_tag *tag)
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static int
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pppoe_broadcast_padi(node_p node, struct mbuf *m0)
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{
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hook_p hook;
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const priv_p privp = NG_NODE_PRIVATE(node);
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sessp sp;
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int error = 0;
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LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
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sessp sp = NG_HOOK_PRIVATE(hook);
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LIST_FOREACH(sp, &privp->listeners, sessions) {
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struct mbuf *m;
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/*
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* Go through all listening hooks and
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* broadcast the PADI packet up there
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*/
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if (sp == NULL)
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continue;
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if (sp->state != PPPOE_LISTENING)
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continue;
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m = m_dup(m0, M_DONTWAIT);
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if (m == NULL)
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return (ENOMEM);
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NG_SEND_DATA_ONLY(error, hook, m);
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NG_SEND_DATA_ONLY(error, sp->hook, m);
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if (error)
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return (error);
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}
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@ -495,25 +477,15 @@ pppoe_broadcast_padi(node_p node, struct mbuf *m0)
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static hook_p
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pppoe_find_svc(node_p node, const char *svc_name, int svc_len)
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{
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hook_p hook;
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const priv_p privp = NG_NODE_PRIVATE(node);
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sessp sp;
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LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
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sessp sp = NG_HOOK_PRIVATE(hook);
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negp neg;
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/* Skip any nonsession hook. */
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if (sp == NULL)
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continue;
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/* Skip any sessions which are not in LISTEN mode. */
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if (sp->state != PPPOE_LISTENING)
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continue;
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neg = sp->neg;
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LIST_FOREACH(sp, &privp->listeners, sessions) {
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negp neg = sp->neg;
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if (neg->service_len == svc_len &&
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strncmp(svc_name, neg->service.data, svc_len) == 0)
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return (hook);
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return (sp->hook);
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}
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return (NULL);
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@ -541,13 +513,13 @@ pppoe_getnewsession(sessp sp)
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/* Check it isn't already in use. */
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hash = SESSHASH(val);
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mtx_lock(&privp->sesshash[hash].mtx);
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TAILQ_FOREACH(tsp, &privp->sesshash[hash].head, sessions) {
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LIST_FOREACH(tsp, &privp->sesshash[hash].head, sessions) {
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if (tsp->Session_ID == val)
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break;
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}
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if (!tsp) {
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sp->Session_ID = val;
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TAILQ_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions);
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LIST_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions);
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}
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mtx_unlock(&privp->sesshash[hash].mtx);
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if (tsp)
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@ -566,7 +538,7 @@ pppoe_addsession(sessp sp)
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uint16_t hash = SESSHASH(sp->Session_ID);
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mtx_lock(&privp->sesshash[hash].mtx);
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TAILQ_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions);
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LIST_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions);
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mtx_unlock(&privp->sesshash[hash].mtx);
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}
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@ -578,7 +550,7 @@ pppoe_delsession(sessp sp)
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uint16_t hash = SESSHASH(sp->Session_ID);
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mtx_lock(&privp->sesshash[hash].mtx);
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TAILQ_REMOVE(&privp->sesshash[hash].head, sp, sessions);
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LIST_REMOVE(sp, sessions);
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mtx_unlock(&privp->sesshash[hash].mtx);
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}
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@ -591,7 +563,7 @@ pppoe_findsession(priv_p privp, const struct pppoe_full_hdr *wh)
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sessp sp = NULL;
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mtx_lock(&privp->sesshash[hash].mtx);
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TAILQ_FOREACH(sp, &privp->sesshash[hash].head, sessions) {
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LIST_FOREACH(sp, &privp->sesshash[hash].head, sessions) {
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if (sp->Session_ID == session &&
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bcmp(sp->pkt_hdr.eh.ether_dhost,
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wh->eh.ether_shost, ETHER_ADDR_LEN) == 0) {
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@ -651,9 +623,10 @@ ng_pppoe_constructor(node_p node)
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memset(&privp->eh.ether_dhost, 0xff, ETHER_ADDR_LEN);
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privp->eh.ether_type = ETHERTYPE_PPPOE_DISC;
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LIST_INIT(&privp->listeners);
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for (i = 0; i < SESSHASHSIZE; i++) {
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mtx_init(&privp->sesshash[i].mtx, "PPPoE hash mutex", NULL, MTX_DEF);
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TAILQ_INIT(&privp->sesshash[i].head);
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LIST_INIT(&privp->sesshash[i].head);
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}
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CTR3(KTR_NET, "%20s: created node [%x] (%p)",
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@ -789,18 +762,12 @@ ng_pppoe_rcvmsg(node_p node, item_p item, hook_p lasthook)
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/* Make sure strcmp will terminate safely. */
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ourmsg->hook[sizeof(ourmsg->hook) - 1] = '\0';
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/* Cycle through all known hooks. */
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LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
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if (NG_HOOK_NAME(hook) &&
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strcmp(NG_HOOK_NAME(hook), ourmsg->hook) ==
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0)
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break;
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}
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/* Find hook by name. */
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hook = ng_findhook(node, ourmsg->hook);
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if (hook == NULL)
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LEAVE(ENOENT);
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sp = NG_HOOK_PRIVATE(hook);
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if (sp == NULL)
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LEAVE(EINVAL);
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@ -922,6 +889,7 @@ ng_pppoe_rcvmsg(node_p node, item_p item, hook_p lasthook)
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* Wait for PADI packet coming from Ethernet.
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*/
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sp->state = PPPOE_LISTENING;
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LIST_INSERT_HEAD(&privp->listeners, sp, sessions);
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break;
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case NGM_PPPOE_OFFER:
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/*
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@ -1810,7 +1778,9 @@ ng_pppoe_disconnect(hook_p hook)
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privp->ethernet_hook, m);
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}
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}
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if (sp->Session_ID)
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if (sp->state == PPPOE_LISTENING)
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LIST_REMOVE(sp, sessions);
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else if (sp->Session_ID)
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pppoe_delsession(sp);
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/*
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* As long as we have somewhere to store the timeout handle,
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