diff options
Diffstat (limited to 'src/plugins/gtpu')
| -rw-r--r-- | src/plugins/gtpu/gtpu.h | 4 | ||||
| -rw-r--r-- | src/plugins/gtpu/gtpu_encap.c | 30 |
2 files changed, 23 insertions, 11 deletions
diff --git a/src/plugins/gtpu/gtpu.h b/src/plugins/gtpu/gtpu.h index 6331aa31890..05208755d8c 100644 --- a/src/plugins/gtpu/gtpu.h +++ b/src/plugins/gtpu/gtpu.h @@ -55,13 +55,15 @@ typedef struct { u8 ver_flags; u8 type; - u16 length; /* length in octets of the payload */ + u16 length; /* length in octets of the data following the fixed part of the header */ u32 teid; u16 sequence; u8 pdu_number; u8 next_ext_type; } gtpu_header_t; +#define GTPU_V1_HDR_LEN 8 + #define GTPU_VER_MASK (7<<5) #define GTPU_PT_BIT (1<<4) #define GTPU_E_BIT (1<<2) diff --git a/src/plugins/gtpu/gtpu_encap.c b/src/plugins/gtpu/gtpu_encap.c index 5c37f4db306..4442c42ad66 100644 --- a/src/plugins/gtpu/gtpu_encap.c +++ b/src/plugins/gtpu/gtpu_encap.c @@ -298,19 +298,23 @@ gtpu_encap_inline (vlib_main_t * vm, /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*ip4_0) - sizeof(*udp0)); + - sizeof (*ip4_0) - sizeof(*udp0) + - GTPU_V1_HDR_LEN); gtpu0->length = new_l0; gtpu1 = (gtpu_header_t *)(udp1+1); new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1) - - sizeof (*ip4_1) - sizeof(*udp1)); + - sizeof (*ip4_1) - sizeof(*udp1) + - GTPU_V1_HDR_LEN); gtpu1->length = new_l1; gtpu2 = (gtpu_header_t *)(udp2+1); new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2) - - sizeof (*ip4_2) - sizeof(*udp2)); + - sizeof (*ip4_2) - sizeof(*udp2) + - GTPU_V1_HDR_LEN); gtpu2->length = new_l2; gtpu3 = (gtpu_header_t *)(udp3+1); new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3) - - sizeof (*ip4_3) - sizeof(*udp3)); + - sizeof (*ip4_3) - sizeof(*udp3) + - GTPU_V1_HDR_LEN); gtpu3->length = new_l3; } else /* ipv6 */ @@ -397,19 +401,23 @@ gtpu_encap_inline (vlib_main_t * vm, /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*ip4_0) - sizeof(*udp0)); + - sizeof (*ip6_0) - sizeof(*udp0) + - GTPU_V1_HDR_LEN); gtpu0->length = new_l0; gtpu1 = (gtpu_header_t *)(udp1+1); new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1) - - sizeof (*ip4_1) - sizeof(*udp1)); + - sizeof (*ip6_1) - sizeof(*udp1) + - GTPU_V1_HDR_LEN); gtpu1->length = new_l1; gtpu2 = (gtpu_header_t *)(udp2+1); new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2) - - sizeof (*ip4_2) - sizeof(*udp2)); + - sizeof (*ip6_2) - sizeof(*udp2) + - GTPU_V1_HDR_LEN); gtpu2->length = new_l2; gtpu3 = (gtpu_header_t *)(udp3+1); new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3) - - sizeof (*ip4_3) - sizeof(*udp3)); + - sizeof (*ip6_3) - sizeof(*udp3) + - GTPU_V1_HDR_LEN); gtpu3->length = new_l3; } @@ -556,7 +564,8 @@ gtpu_encap_inline (vlib_main_t * vm, /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*ip4_0) - sizeof(*udp0)); + - sizeof (*ip4_0) - sizeof(*udp0) + - GTPU_V1_HDR_LEN); gtpu0->length = new_l0; } @@ -592,7 +601,8 @@ gtpu_encap_inline (vlib_main_t * vm, /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*ip4_0) - sizeof(*udp0)); + - sizeof (*ip4_0) - sizeof(*udp0) + - GTPU_V1_HDR_LEN); gtpu0->length = new_l0; } |