#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ipsec_io.h>
-
-#if WITH_LIBSSL > 0
+#include <vnet/ipsec/ipsec_output.h>
#define foreach_ipsec_output_error \
_(RX_PKTS, "IPSec pkts received") \
return s;
}
-always_inline ipsec_policy_t *
-ipsec_output_policy_match (ipsec_spd_t * spd, u8 pr, u32 la, u32 ra, u16 lp,
- u16 rp)
-{
- ipsec_main_t *im = &ipsec_main;
- ipsec_policy_t *p;
- u32 *i;
-
- if (!spd)
- return 0;
-
- vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP4_OUTBOUND])
- {
- p = pool_elt_at_index (im->policies, *i);
- if (PREDICT_FALSE (p->protocol && (p->protocol != pr)))
- continue;
-
- if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32))
- continue;
-
- if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
- continue;
-
- if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
- continue;
-
- if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32))
- continue;
-
- if (PREDICT_FALSE
- ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP)
- && (pr != IP_PROTOCOL_SCTP)))
- return p;
-
- if (lp < p->lport.start)
- continue;
-
- if (lp > p->lport.stop)
- continue;
-
- if (rp < p->rport.start)
- continue;
-
- if (rp > p->rport.stop)
- continue;
-
- return p;
- }
- return 0;
-}
-
-always_inline uword
-ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la,
- ip6_address_t * ua)
-{
- if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) &&
- (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0))
- return 1;
- return 0;
-}
-
-always_inline ipsec_policy_t *
-ipsec6_output_policy_match (ipsec_spd_t * spd,
- ip6_address_t * la,
- ip6_address_t * ra, u16 lp, u16 rp, u8 pr)
-{
- ipsec_main_t *im = &ipsec_main;
- ipsec_policy_t *p;
- u32 *i;
-
- if (!spd)
- return 0;
-
- vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP6_OUTBOUND])
- {
- p = pool_elt_at_index (im->policies, *i);
- if (PREDICT_FALSE (p->protocol && (p->protocol != pr)))
- continue;
-
- if (!ip6_addr_match_range (ra, &p->raddr.start.ip6, &p->raddr.stop.ip6))
- continue;
-
- if (!ip6_addr_match_range (la, &p->laddr.start.ip6, &p->laddr.stop.ip6))
- continue;
-
- if (PREDICT_FALSE
- ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP)
- && (pr != IP_PROTOCOL_SCTP)))
- return p;
-
- if (lp < p->lport.start)
- continue;
-
- if (lp > p->lport.stop)
- continue;
-
- if (rp < p->rport.start)
- continue;
-
- if (rp > p->rport.stop)
- continue;
-
- return p;
- }
-
- return 0;
-}
-
static inline uword
ipsec_output_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * from_frame, int is_ipv6)
ipsec_spd_t *spd0 = 0;
int bogus;
u64 nc_protect = 0, nc_bypass = 0, nc_discard = 0, nc_nomatch = 0;
+ u8 flow_cache_enabled = im->output_flow_cache_flag;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
{
u32 bi0, pi0, bi1;
vlib_buffer_t *b0, *b1;
- ipsec_policy_t *p0;
+ ipsec_policy_t *p0 = NULL;
ip4_header_t *ip0;
ip6_header_t *ip6_0 = 0;
udp_header_t *udp0;
sw_if_index0, spd_index0, spd0->id);
#endif
- p0 = ipsec_output_policy_match (spd0, ip0->protocol,
- clib_net_to_host_u32
- (ip0->src_address.as_u32),
- clib_net_to_host_u32
- (ip0->dst_address.as_u32),
- clib_net_to_host_u16
- (udp0->src_port),
- clib_net_to_host_u16
- (udp0->dst_port));
+ /*
+ * Check whether flow cache is enabled.
+ */
+ if (flow_cache_enabled)
+ {
+ p0 = ipsec4_out_spd_find_flow_cache_entry (
+ im, ip0->protocol, ip0->src_address.as_u32,
+ ip0->dst_address.as_u32, udp0->src_port, udp0->dst_port);
+ }
+
+ /* Fall back to linear search if flow cache lookup fails */
+ if (p0 == NULL)
+ {
+ p0 = ipsec_output_policy_match (
+ spd0, ip0->protocol,
+ clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ clib_net_to_host_u16 (udp0->src_port),
+ clib_net_to_host_u16 (udp0->dst_port), flow_cache_enabled);
+ }
}
tcp0 = (void *) udp0;
{
ipsec_sa_t *sa = 0;
nc_protect++;
- sa = pool_elt_at_index (im->sad, p0->sa_index);
+ sa = ipsec_sa_get (p0->sa_index);
if (sa->protocol == IPSEC_PROTOCOL_ESP)
if (is_ipv6)
next_node_index = im->esp6_encrypt_node_index;
next_node_index = im->ah4_encrypt_node_index;
vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
- if (is_ipv6)
- {
- if (PREDICT_FALSE
- (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM))
- {
- tcp0->checksum =
- ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6_0,
- &bogus);
- b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
- }
- if (PREDICT_FALSE
- (b0->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM))
- {
- udp0->checksum =
- ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6_0,
- &bogus);
- b0->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
- }
- }
- else
+ if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_OFFLOAD))
{
- if (b0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
- {
- ip0->checksum = ip4_header_checksum (ip0);
- b0->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
- }
- if (PREDICT_FALSE
- (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM))
+ vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags;
+
+ /*
+ * Clearing offload flags before checksum is computed
+ * It guarantees the cache hit!
+ */
+ vnet_buffer_offload_flags_clear (b0, oflags);
+
+ if (is_ipv6)
{
- tcp0->checksum =
- ip4_tcp_udp_compute_checksum (vm, b0, ip0);
- b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ if (PREDICT_FALSE (oflags &
+ VNET_BUFFER_OFFLOAD_F_TCP_CKSUM))
+ {
+ tcp0->checksum = ip6_tcp_udp_icmp_compute_checksum (
+ vm, b0, ip6_0, &bogus);
+ }
+ if (PREDICT_FALSE (oflags &
+ VNET_BUFFER_OFFLOAD_F_UDP_CKSUM))
+ {
+ udp0->checksum = ip6_tcp_udp_icmp_compute_checksum (
+ vm, b0, ip6_0, &bogus);
+ }
}
- if (PREDICT_FALSE
- (b0->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM))
+ else
{
- udp0->checksum =
- ip4_tcp_udp_compute_checksum (vm, b0, ip0);
- b0->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ if (PREDICT_FALSE (oflags &
+ VNET_BUFFER_OFFLOAD_F_IP_CKSUM))
+ {
+ ip0->checksum = ip4_header_checksum (ip0);
+ }
+ if (PREDICT_FALSE (oflags &
+ VNET_BUFFER_OFFLOAD_F_TCP_CKSUM))
+ {
+ tcp0->checksum =
+ ip4_tcp_udp_compute_checksum (vm, b0, ip0);
+ }
+ if (PREDICT_FALSE (oflags &
+ VNET_BUFFER_OFFLOAD_F_UDP_CKSUM))
+ {
+ udp0->checksum =
+ ip4_tcp_udp_compute_checksum (vm, b0, ip0);
+ }
}
}
vlib_buffer_advance (b0, iph_offset);
return ipsec_output_inline (vm, node, frame, 1);
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ipsec6_output_node) = {
.name = "ipsec6-output-feature",
.vector_size = sizeof (u32),
#undef _
},
};
-/* *INDENT-ON* */
-
-#else /* IPSEC > 1 */
-/* Dummy ipsec output node, in case when IPSec is disabled */
-
-static uword
-ipsec_output_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ipsec4_output_node) = {
- .vector_size = sizeof (u32),
- .function = ipsec_output_node_fn,
- .name = "ipsec4-output-feature",
-};
-
-VLIB_REGISTER_NODE (ipsec6_output_node) = {
- .vector_size = sizeof (u32),
- .function = ipsec_output_node_fn,
- .name = "ipsec6-output-feature",
-};
-/* *INDENT-ON* */
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
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