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authorNeale Ranns <nranns@cisco.com>2020-01-02 04:06:10 +0000
committerOle Tr�an <otroan@employees.org>2020-11-02 08:49:08 +0000
commit041add7d12217494934b651e4e38b5eab5216ddc (patch)
tree42f6ed8c3e4477b7c7cf93b19f227e4fc0afb4cb /src/vnet/tunnel/tunnel_dp.h
parent62877029aac3e05a1e1db579aeaad42bca5a70a4 (diff)
ipsec: Tunnel SA DSCP behaviour
Type: feature - use tunnel_encap_decap_flags to control the copying of DSCP/ECN/etc during IPSEC tunnel mode encap. - use DSCP value to have fixed encap value. Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: If4f51fd4c1dcbb0422aac9bd078e5c14af5bf11f
Diffstat (limited to 'src/vnet/tunnel/tunnel_dp.h')
-rw-r--r--src/vnet/tunnel/tunnel_dp.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/vnet/tunnel/tunnel_dp.h b/src/vnet/tunnel/tunnel_dp.h
index a00a3b3e222..f84e764f7ea 100644
--- a/src/vnet/tunnel/tunnel_dp.h
+++ b/src/vnet/tunnel/tunnel_dp.h
@@ -34,6 +34,41 @@ tunnel_encap_fixup_4o4 (tunnel_encap_decap_flags_t flags,
}
static_always_inline void
+tunnel_encap_fixup_4o4_w_chksum (tunnel_encap_decap_flags_t flags,
+ const ip4_header_t * inner,
+ ip4_header_t * outer)
+{
+ if (flags & (TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP |
+ TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
+ {
+ ip_csum_t sum = outer->checksum;
+ u8 tos = outer->tos;
+
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ ip4_header_set_dscp (outer, ip4_header_get_dscp (inner));
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ ip4_header_set_ecn (outer, ip4_header_get_ecn (inner));
+
+ sum =
+ ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t, tos);
+ outer->checksum = ip_csum_fold (sum);
+ }
+ if ((flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
+ ip4_header_get_df (inner))
+ {
+ ip_csum_t sum = outer->checksum;
+ u16 tos = outer->flags_and_fragment_offset;
+
+ ip4_header_set_df (outer);
+
+ sum =
+ ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t,
+ flags_and_fragment_offset);
+ outer->checksum = ip_csum_fold (sum);
+ }
+}
+
+static_always_inline void
tunnel_encap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
const ip6_header_t * inner, ip4_header_t * outer)
{
@@ -44,6 +79,28 @@ tunnel_encap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
}
static_always_inline void
+tunnel_encap_fixup_6o4_w_chksum (tunnel_encap_decap_flags_t flags,
+ const ip6_header_t * inner,
+ ip4_header_t * outer)
+{
+ if (flags & (TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP |
+ TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
+ {
+ ip_csum_t sum = outer->checksum;
+ u8 tos = outer->tos;
+
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ ip4_header_set_dscp (outer, ip6_dscp_network_order (inner));
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ ip4_header_set_ecn (outer, ip6_ecn_network_order ((inner)));
+
+ sum =
+ ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t, tos);
+ outer->checksum = ip_csum_fold (sum);
+ }
+}
+
+static_always_inline void
tunnel_encap_fixup_6o6 (tunnel_encap_decap_flags_t flags,
const ip6_header_t * inner, ip6_header_t * outer)
{