diff options
| author |   Ole Troan <ot@cisco.com> | 2019-10-09 13:33:19 +0200 |
|---|---|---|
| committer |   Neale Ranns <nranns@cisco.com> | 2019-11-11 12:33:36 +0000 |
| commit | eb284a1f8f10d752285a0a59e75bc54acae50779 (patch) | |
| tree | 4ce777b223a51fa70f9e0dc18e7842b488b81cd6 /src/vnet/ip/ip6_forward.c | |
| parent | d318a996b7bdcf0246b2d9927a918a3773a88fa6 (diff) | |
ip: functional interface to ip fragmentation
This provides a functional interface to IP fragmentation.
Allowing external features to fragment. Supports
arbitrary encap size, for e.g. MPLS or inner fragmentation
of tunnels.
This also removed dual loop in MAP that was fundamentally broken.
Type: fix
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: Ia89ecec8ee3cbe2416edbe87630fdb714898c2a8
Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip6_forward.c')
| -rw-r--r-- | src/vnet/ip/ip6_forward.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c index 50de501fe0d..9656621c13b 100644 --- a/src/vnet/ip/ip6_forward.c +++ b/src/vnet/ip/ip6_forward.c @@ -1652,7 +1652,7 @@ typedef enum always_inline void ip6_mtu_check (vlib_buffer_t * b, u16 packet_bytes, u16 adj_packet_bytes, bool is_locally_generated, - u32 * next, u32 * error) + u32 * next, u8 is_midchain, u32 * error) { if (adj_packet_bytes >= 1280 && packet_bytes > adj_packet_bytes) { @@ -1660,7 +1660,9 @@ ip6_mtu_check (vlib_buffer_t * b, u16 packet_bytes, { /* IP fragmentation */ ip_frag_set_vnet_buffer (b, adj_packet_bytes, - IP6_FRAG_NEXT_IP6_REWRITE, 0); + (is_midchain ? + IP_FRAG_NEXT_IP_REWRITE_MIDCHAIN : + IP_FRAG_NEXT_IP_REWRITE), 0); *next = IP6_REWRITE_NEXT_FRAGMENT; *error = IP6_ERROR_MTU_EXCEEDED; } @@ -1840,10 +1842,12 @@ ip6_rewrite_inline_with_gso (vlib_main_t * vm, ip6_mtu_check (p0, ip0_len, adj0[0].rewrite_header.max_l3_packet_bytes, - is_locally_originated0, &next0, &error0); + is_locally_originated0, &next0, is_midchain, + &error0); ip6_mtu_check (p1, ip1_len, adj1[0].rewrite_header.max_l3_packet_bytes, - is_locally_originated1, &next1, &error1); + is_locally_originated1, &next1, is_midchain, + &error1); /* Don't adjust the buffer for hop count issue; icmp-error node * wants to see the IP header */ @@ -2011,7 +2015,8 @@ ip6_rewrite_inline_with_gso (vlib_main_t * vm, ip6_mtu_check (p0, ip0_len, adj0[0].rewrite_header.max_l3_packet_bytes, - is_locally_originated0, &next0, &error0); + is_locally_originated0, &next0, is_midchain, + &error0); /* Don't adjust the buffer for hop count issue; icmp-error node * wants to see the IP header */ |