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Implemented Traffic Flow Confidentiality padding in kernel_interface

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This commit is contained in:
Martin Willi
2010-12-20 09:45:39 +01:00
parent 814873a356
commit d86bb6ef4d
8 changed files with 35 additions and 13 deletions
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src/include/linux/xfrm.h
+1
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@@ -283,6 +283,7 @@ enum xfrm_attr_type_t {
XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
XFRMA_MARK, /* struct xfrm_mark */
XFRMA_TFCPAD, /* __u32 */
__XFRMA_MAX
#define XFRMA_MAX (__XFRMA_MAX - 1)
src/libcharon/plugins/load_tester/load_tester_ipsec.c
+1 -1
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@@ -52,7 +52,7 @@ METHOD(kernel_ipsec_t, get_cpi, status_t,
METHOD(kernel_ipsec_t, add_sa, status_t,
private_load_tester_ipsec_t *this, host_t *src, host_t *dst,
u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
u_int32_t tfc, lifetime_cfg_t *lifetime, 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, bool encap, bool inbound, traffic_selector_t *src_ts,
traffic_selector_t *dst_ts)
src/libcharon/sa/child_sa.c
+2 -1
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@@ -566,6 +566,7 @@ METHOD(child_sa_t, install, status_t,
traffic_selector_t *src_ts = NULL, *dst_ts = NULL;
time_t now;
lifetime_cfg_t *lifetime;
u_int32_t tfc = 0;
host_t *src, *dst;
status_t status;
bool update = FALSE;
@@ -639,7 +640,7 @@ METHOD(child_sa_t, install, status_t,
status = hydra->kernel_interface->add_sa(hydra->kernel_interface,
src, dst, spi, proto_ike2ip(this->protocol), this->reqid,
inbound ? this->mark_in : this->mark_out,
inbound ? this->mark_in : this->mark_out, tfc,
lifetime, enc_alg, encr, int_alg, integ, this->mode,
this->ipcomp, cpi, this->encap, update, src_ts, dst_ts);
src/libhydra/kernel/kernel_interface.c
+4 -4
View File
@@ -78,8 +78,8 @@ METHOD(kernel_interface_t, get_cpi, status_t,
METHOD(kernel_interface_t, add_sa, status_t,
private_kernel_interface_t *this, host_t *src, host_t *dst,
u_int32_t spi, u_int8_t protocol, u_int32_t reqid,
mark_t mark, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
u_int32_t tfc, lifetime_cfg_t *lifetime, 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, bool encap, bool inbound, traffic_selector_t *src_ts,
traffic_selector_t *dst_ts)
@@ -89,8 +89,8 @@ METHOD(kernel_interface_t, add_sa, status_t,
return NOT_SUPPORTED;
}
return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid,
mark, lifetime, enc_alg, enc_key, int_alg, int_key, mode, ipcomp,
cpi, encap, inbound, src_ts, dst_ts);
mark, tfc, lifetime, enc_alg, enc_key, int_alg, int_key, mode,
ipcomp, cpi, encap, inbound, src_ts, dst_ts);
}
METHOD(kernel_interface_t, update_sa, status_t,
src/libhydra/kernel/kernel_interface.h
+2 -1
View File
@@ -91,6 +91,7 @@ struct kernel_interface_t {
* @param protocol protocol for this SA (ESP/AH)
* @param reqid unique ID 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
* @param enc_alg Algorithm to use for encryption (ESP only)
* @param enc_key key to use for encryption
@@ -108,7 +109,7 @@ struct kernel_interface_t {
status_t (*add_sa) (kernel_interface_t *this,
host_t *src, host_t *dst, u_int32_t spi,
u_int8_t protocol, u_int32_t reqid, mark_t mark,
lifetime_cfg_t *lifetime,
u_int32_t tfc, lifetime_cfg_t *lifetime,
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,
src/libhydra/kernel/kernel_ipsec.h
+2 -1
View File
@@ -204,6 +204,7 @@ struct kernel_ipsec_t {
* @param protocol protocol for this SA (ESP/AH)
* @param reqid unique ID for this SA
* @param mark mark for this SA
* @param tfc Traffic Flow Confidentiality padding for this SA
* @param lifetime lifetime_cfg_t for this SA
* @param enc_alg Algorithm to use for encryption (ESP only)
* @param enc_key key to use for encryption
@@ -221,7 +222,7 @@ struct kernel_ipsec_t {
status_t (*add_sa) (kernel_ipsec_t *this,
host_t *src, host_t *dst, u_int32_t spi,
u_int8_t protocol, u_int32_t reqid,
mark_t mark, lifetime_cfg_t *lifetime,
mark_t mark, u_int32_t tfc, lifetime_cfg_t *lifetime,
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,
src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c
+20 -2
View File
@@ -866,7 +866,7 @@ METHOD(kernel_ipsec_t, get_cpi, status_t,
METHOD(kernel_ipsec_t, add_sa, status_t,
private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst,
u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
u_int32_t tfc, lifetime_cfg_t *lifetime, 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, bool encap, bool inbound,
traffic_selector_t* src_ts, traffic_selector_t* dst_ts)
@@ -882,7 +882,7 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
if (ipcomp != IPCOMP_NONE && cpi != 0)
{
lifetime_cfg_t lft = {{0,0,0},{0,0,0},{0,0,0}};
add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, mark,
add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, mark, tfc,
&lft, ENCR_UNDEFINED, chunk_empty, AUTH_UNDEFINED, chunk_empty,
mode, ipcomp, 0, FALSE, inbound, NULL, NULL);
ipcomp = IPCOMP_NONE;
@@ -1154,6 +1154,24 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
rthdr = XFRM_RTA_NEXT(rthdr);
}
if (tfc)
{
u_int32_t *tfcpad;
rthdr->rta_type = XFRMA_TFCPAD;
rthdr->rta_len = RTA_LENGTH(sizeof(u_int32_t));
hdr->nlmsg_len += rthdr->rta_len;
if (hdr->nlmsg_len > sizeof(request))
{
return FAILED;
}
tfcpad = (u_int32_t*)RTA_DATA(rthdr);
*tfcpad = tfc;
rthdr = XFRM_RTA_NEXT(rthdr);
}
if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS)
{
if (mark.value)
src/pluto/kernel.c
+3 -3
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@@ -1183,7 +1183,7 @@ static bool setup_half_ipsec_sa(struct state *st, bool inbound)
if (hydra->kernel_interface->add_sa(hydra->kernel_interface, host_src,
host_dst, ipcomp_spi, said_next->proto, c->spd.reqid,
mark, &lt_none, ENCR_UNDEFINED, chunk_empty,
mark, 0, &lt_none, ENCR_UNDEFINED, chunk_empty,
AUTH_UNDEFINED, chunk_empty, mode,
st->st_ipcomp.attrs.transid, 0 /* cpi */, FALSE,
inbound, NULL, NULL) != SUCCESS)
@@ -1292,7 +1292,7 @@ static bool setup_half_ipsec_sa(struct state *st, bool inbound)
if (hydra->kernel_interface->add_sa(hydra->kernel_interface, host_src,
host_dst, esp_spi, said_next->proto, c->spd.reqid,
mark, &lt_none, enc_alg, enc_key,
mark, 0, &lt_none, enc_alg, enc_key,
auth_alg, auth_key, mode, IPCOMP_NONE, 0 /* cpi */,
encap, inbound, NULL, NULL) != SUCCESS)
{
@@ -1325,7 +1325,7 @@ static bool setup_half_ipsec_sa(struct state *st, bool inbound)
if (hydra->kernel_interface->add_sa(hydra->kernel_interface, host_src,
host_dst, ah_spi, said_next->proto, c->spd.reqid,
mark, &lt_none, ENCR_UNDEFINED, chunk_empty,
mark, 0, &lt_none, ENCR_UNDEFINED, chunk_empty,
auth_alg, auth_key, mode, IPCOMP_NONE, 0 /* cpi */,
FALSE, inbound, NULL, NULL) != SUCCESS)
{