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eapol: Use frame watches for preauth_sm

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This commit is contained in:
Andrew Zaborowski 2017-09-30 04:28:21 +02:00 committed by Denis Kenzior
parent cc4da26f69
commit dae0abbac8
1 changed files with 15 additions and 35 deletions
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50
src/eapol.c
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@ -1820,6 +1820,7 @@ struct preauth_sm {
eapol_preauth_destroy_func_t destroy;
void *user_data;
struct l_timeout *timeout;
uint32_t watch_id;
bool initial_rx:1;
};
@ -1834,30 +1835,10 @@ static void preauth_sm_destroy(void *value)
eap_free(sm->eap);
l_timeout_remove(sm->timeout);
eapol_frame_watch_remove(sm->watch_id);
l_free(sm);
}
static struct preauth_sm *preauth_find_sm(uint32_t ifindex, const uint8_t *aa)
{
const struct l_queue_entry *entry;
struct preauth_sm *sm;
for (entry = l_queue_get_entries(preauths); entry;
entry = entry->next) {
sm = entry->data;
if (sm->ifindex != ifindex)
continue;
if (memcmp(sm->aa, aa, 6))
continue;
return sm;
}
return NULL;
}
static void preauth_frame(struct preauth_sm *sm, uint8_t packet_type,
const uint8_t *data, size_t data_len)
{
@ -1874,12 +1855,16 @@ static void preauth_frame(struct preauth_sm *sm, uint8_t packet_type,
pae_write(sm->ifindex, sm->aa, sm->spa, 0x88c7, frame);
}
static void preauth_rx_packet(struct preauth_sm *sm,
const uint8_t *frame, size_t len)
static void preauth_rx_packet(uint16_t proto, const uint8_t *from,
const struct eapol_frame *frame,
void *user_data)
{
const struct eapol_header *eh = (const struct eapol_header *) frame;
struct preauth_sm *sm = user_data;
if (eh->packet_type != 0) /* EAPOL-EAP */
if (proto != 0x88c7 || memcmp(from, sm->aa, 6))
return;
if (frame->header.packet_type != 0) /* EAPOL-EAP */
return;
if (!sm->initial_rx) {
@ -1895,7 +1880,8 @@ static void preauth_rx_packet(struct preauth_sm *sm,
l_timeout_modify(sm->timeout, EAPOL_TIMEOUT_SEC * 3);
}
eap_rx_packet(sm->eap, frame + 4, L_BE16_TO_CPU(eh->packet_len));
eap_rx_packet(sm->eap, frame->data,
L_BE16_TO_CPU(frame->header.packet_len));
}
static void preauth_eap_msg_cb(const uint8_t *eap_data, size_t len,
@ -1992,6 +1978,9 @@ struct preauth_sm *eapol_preauth_start(const uint8_t *aa,
sm->timeout = l_timeout_create(EAPOL_TIMEOUT_SEC, preauth_timeout,
sm, NULL);
sm->watch_id = eapol_frame_watch_add(sm->ifindex,
preauth_rx_packet, sm);
l_queue_push_head(preauths, sm);
/* Send EAPOL-Start */
@ -2060,15 +2049,6 @@ void __eapol_rx_packet(uint32_t ifindex, const uint8_t *src, uint16_t proto,
L_UINT_TO_PTR(ifindex),
eapol_frame_watch_func_t, proto, src,
(const struct eapol_frame *) eh);
if (proto == 0x88c7) {
struct preauth_sm *sm = preauth_find_sm(ifindex, src);
if (!sm)
return;
preauth_rx_packet(sm, frame, len);
}
}
bool eapol_init()