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eapol: helper functions for REKEY_OFFLOAD

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This commit is contained in:
Rahul Rahul 2016-06-22 15:49:15 -07:00 committed by Denis Kenzior
parent dc721a6ae2
commit fb339bcc76
2 changed files with 34 additions and 0 deletions
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26
src/eapol.c
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@ -47,6 +47,7 @@ eapol_get_nonce_func_t get_nonce = NULL;
eapol_install_tk_func_t install_tk = NULL; eapol_install_tk_func_t install_tk = NULL;
eapol_install_gtk_func_t install_gtk = NULL; eapol_install_gtk_func_t install_gtk = NULL;
eapol_deauthenticate_func_t deauthenticate = NULL; eapol_deauthenticate_func_t deauthenticate = NULL;
eapol_rekey_offload_func_t rekey_offload = NULL;
enum eapol_protocol_version protocol_version = EAPOL_PROTOCOL_VERSION_2004; enum eapol_protocol_version protocol_version = EAPOL_PROTOCOL_VERSION_2004;
#define VERIFY_IS_ZERO(field) \ #define VERIFY_IS_ZERO(field) \
@ -1199,6 +1200,10 @@ static void eapol_handle_ptk_3_of_4(uint32_t ifindex,
ek->key_rsc, 6, cipher, sm->user_data); ek->key_rsc, 6, cipher, sm->user_data);
} }
if (rekey_offload)
rekey_offload(sm->ifindex, ptk->kek, ptk->kck,
sm->replay_counter, sm->user_data);
fail: fail:
l_free(step4); l_free(step4);
} }
@ -1528,6 +1533,22 @@ void __eapol_rx_packet(uint32_t ifindex, const uint8_t *spa, const uint8_t *aa,
} }
} }
void __eapol_update_replay_counter(uint32_t ifindex, const uint8_t *spa,
const uint8_t *aa, uint64_t replay_counter)
{
struct eapol_sm *sm;
sm = eapol_find_sm(ifindex, spa, aa);
if (!sm)
return;
if (sm->replay_counter >= replay_counter)
return;
sm->replay_counter = replay_counter;
}
void __eapol_set_tx_packet_func(eapol_tx_packet_func_t func) void __eapol_set_tx_packet_func(eapol_tx_packet_func_t func)
{ {
tx_packet = func; tx_packet = func;
@ -1558,6 +1579,11 @@ void __eapol_set_deauthenticate_func(eapol_deauthenticate_func_t func)
deauthenticate = func; deauthenticate = func;
} }
void __eapol_set_rekey_offload_func(eapol_rekey_offload_func_t func)
{
rekey_offload = func;
}
struct l_io *eapol_open_pae(uint32_t index) struct l_io *eapol_open_pae(uint32_t index)
{ {
struct l_io *io; struct l_io *io;

8
src/eapol.h
View File

@ -120,6 +120,11 @@ typedef void (*eapol_deauthenticate_func_t)(uint32_t ifindex, const uint8_t *aa,
const uint8_t *spa, const uint8_t *spa,
uint16_t reason_code, uint16_t reason_code,
void *user_data); void *user_data);
typedef void (*eapol_rekey_offload_func_t)(uint32_t ifindex,
const uint8_t *kek,
const uint8_t *kck,
uint64_t replay_counter,
void *user_data);
bool eapol_calculate_mic(const uint8_t *kck, const struct eapol_key *frame, bool eapol_calculate_mic(const uint8_t *kck, const struct eapol_key *frame,
uint8_t *mic); uint8_t *mic);
@ -168,6 +173,9 @@ void __eapol_set_protocol_version(enum eapol_protocol_version version);
void __eapol_set_install_tk_func(eapol_install_tk_func_t func); void __eapol_set_install_tk_func(eapol_install_tk_func_t func);
void __eapol_set_install_gtk_func(eapol_install_gtk_func_t func); void __eapol_set_install_gtk_func(eapol_install_gtk_func_t func);
void __eapol_set_deauthenticate_func(eapol_deauthenticate_func_t func); void __eapol_set_deauthenticate_func(eapol_deauthenticate_func_t func);
void __eapol_set_rekey_offload_func(eapol_rekey_offload_func_t func);
void __eapol_update_replay_counter(uint32_t ifindex, const uint8_t *spa,
const uint8_t *aa, uint64_t replay_counter);
struct eapol_sm *eapol_sm_new(); struct eapol_sm *eapol_sm_new();
void eapol_sm_free(struct eapol_sm *sm); void eapol_sm_free(struct eapol_sm *sm);