diff options
Diffstat (limited to 'src/libhydra/kernel/kernel_interface.h')
| -rw-r--r-- | src/libhydra/kernel/kernel_interface.h | 76 |
1 files changed, 53 insertions, 23 deletions
diff --git a/src/libhydra/kernel/kernel_interface.h b/src/libhydra/kernel/kernel_interface.h index cd550383c..96ce9e26d 100644 --- a/src/libhydra/kernel/kernel_interface.h +++ b/src/libhydra/kernel/kernel_interface.h @@ -104,39 +104,67 @@ struct kernel_interface_t { * @param src source address of SA * @param dst destination address of SA * @param protocol protocol for SA (ESP/AH) - * @param reqid unique ID for this SA * @param spi allocated spi - * @return SUCCESS if operation completed + * @return SUCCESS if operation completed */ status_t (*get_spi)(kernel_interface_t *this, host_t *src, host_t *dst, - u_int8_t protocol, u_int32_t reqid, u_int32_t *spi); + u_int8_t protocol, u_int32_t *spi); /** * Get a Compression Parameter Index (CPI) from the kernel. * * @param src source address of SA * @param dst destination address of SA - * @param reqid unique ID for the corresponding SA * @param cpi allocated cpi - * @return SUCCESS if operation completed + * @return SUCCESS if operation completed */ status_t (*get_cpi)(kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t reqid, u_int16_t *cpi); + u_int16_t *cpi); + + /** + * Allocate or confirm a reqid to use for a given SA pair. + * + * Each returned reqid by a successful call to alloc_reqid() must be + * released using release_reqid(). + * + * The reqid parameter is an in/out parameter. If it points to non-zero, + * the reqid is confirmed and registered for use. If it points to zero, + * a reqid is allocated for the given selectors, and returned to reqid. + * + * @param local_ts traffic selectors of local side for SA + * @param remote_ts traffic selectors of remote side for SA + * @param mark_in inbound mark on SA + * @param mark_out outbound mark on SA + * @param reqid allocated reqid + * @return SUCCESS if reqid allocated + */ + status_t (*alloc_reqid)(kernel_interface_t *this, + linked_list_t *local_ts, linked_list_t *remote_ts, + mark_t mark_in, mark_t mark_out, + u_int32_t *reqid); + + /** + * Release a previously allocated reqid. + * + * @param reqid reqid to release + * @param mark_in inbound mark on SA + * @param mark_out outbound mark on SA + * @return SUCCESS if reqid released + */ + status_t (*release_reqid)(kernel_interface_t *this, u_int32_t reqid, + mark_t mark_in, mark_t mark_out); /** * Add an SA to the SAD. * - * add_sa() may update an already allocated - * SPI (via get_spi). In this case, the replace - * flag must be set. - * This function does install a single SA for a - * single protocol in one direction. + * This function does install a single SA for a single protocol in one + * direction. * * @param src source address for this SA * @param dst destination address for this SA * @param spi SPI allocated by us or remote peer * @param protocol protocol for this SA (ESP/AH) - * @param reqid unique ID for this SA + * @param reqid reqid for this SA * @param mark optional mark for this SA * @param tfc Traffic Flow Confidentiality padding for this SA * @param lifetime lifetime_cfg_t for this SA @@ -152,8 +180,9 @@ struct kernel_interface_t { * @param encap enable UDP encapsulation for NAT traversal * @param esn TRUE to use Extended Sequence Numbers * @param inbound TRUE if this is an inbound SA - * @param src_ts traffic selector with BEET source address - * @param dst_ts traffic selector with BEET destination address + * @param update TRUE if an SPI has already been allocated for SA + * @param src_ts list of source traffic selectors + * @param dst_ts list of destination traffic selectors * @return SUCCESS if operation completed */ status_t (*add_sa) (kernel_interface_t *this, @@ -163,9 +192,9 @@ struct kernel_interface_t { u_int16_t enc_alg, chunk_t enc_key, u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, - u_int32_t replay_window, - bool initiator, bool encap, bool esn, bool inbound, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts); + u_int32_t replay_window, bool initiator, bool encap, + bool esn, bool inbound, bool update, + linked_list_t *src_ts, linked_list_t *dst_ts); /** * Update the hosts on an installed SA. @@ -531,23 +560,24 @@ struct kernel_interface_t { /** * Raise an expire event. * - * @param reqid reqid of the expired SA * @param protocol protocol of the expired SA * @param spi spi of the expired SA + * @param dst destination address of expired SA * @param hard TRUE if it is a hard expire, FALSE otherwise */ - void (*expire)(kernel_interface_t *this, u_int32_t reqid, - u_int8_t protocol, u_int32_t spi, bool hard); + void (*expire)(kernel_interface_t *this, u_int8_t protocol, u_int32_t spi, + host_t *dst, bool hard); /** * Raise a mapping event. * - * @param reqid reqid of the SA + * @param protocol protocol of affected SA * @param spi spi of the SA + * @param dst original destination address of SA * @param remote new remote host */ - void (*mapping)(kernel_interface_t *this, u_int32_t reqid, u_int32_t spi, - host_t *remote); + void (*mapping)(kernel_interface_t *this, u_int8_t protocol, u_int32_t spi, + host_t *dst, host_t *remote); /** * Raise a migrate event. |