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https://gitlab.nic.cz/labs/bird.git
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Merge commit '73e7d3f5cede2e72eb9e77d61424a8c443672c09' into thread-next
This commit is contained in:
Ondrej Zajicek
commit
723a0fe424
@ -92,10 +92,6 @@ enum bmp_message_type {
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BMP_ROUTE_MIRROR_MSG = 6 // Route Mirroring Message
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};
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// Defines size of padding when IPv4 address is going to be put into field
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// which can accept also IPv6 address
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#define BMP_PADDING_IP4_ADDR_SIZE 12
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enum bmp_peer_type {
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BMP_PEER_TYPE_GLOBAL_INSTANCE = 0,
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BMP_PEER_TYPE_RD_INSTANCE = 1,
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@ -116,12 +112,6 @@ struct bmp_peer_hdr_info {
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btime timestamp;
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};
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/* BMP Information TLV header [RFC 7854 - Section 4.4] */
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// Total size of Type and Length fields of Information TLV Header without
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// variable part
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#define BMP_INFO_TLV_FIX_SIZE 4
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enum bmp_info_tlv_type {
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BMP_INFO_TLV_TYPE_STRING = 0, // String
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BMP_INFO_TLV_TYPE_SYS_DESCR = 1, // SysDescr
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@ -156,14 +146,12 @@ struct bmp_peer_down_info {
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};
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/* BMP Termination Message [RFC 7854 - Section 4.5] */
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#define BMP_TERM_INFO_TYPE_SIZE 2
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enum bmp_term_info_type {
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BMP_TERM_INFO_STRING = 0, // The Information field contains string
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BMP_TERM_INFO_REASON = 1, // The Information field contains 2-byte reason code
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};
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// 2-byte code in the Information field
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#define BMP_TERM_REASON_CODE_SIZE 2
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enum bmp_term_reason {
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BMP_TERM_REASON_ADM = 0, // Session administratively closed
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BMP_TERM_REASON_UNK = 1, // Unspecified reason
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@ -172,12 +160,6 @@ enum bmp_term_reason {
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BMP_TERM_REASON_PERM = 4, // Session permanently administratively closed
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};
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// Size of Information Length field in Termination Message header
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#define BMP_TERM_INFO_LEN_FIELD_SIZE 2
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// Default chunk size request when memory allocation
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#define DEFAULT_MEM_BLOCK_SIZE 4096
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// Initial delay for connection to the BMP collector
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#define CONNECT_INIT_TIME (200 MS)
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@ -281,20 +263,28 @@ static struct resclass bmp_tx_resource_class = {
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};
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static void
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bmp_common_hdr_serialize(buffer *stream, const enum bmp_message_type type, const u32 data_size)
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bmp_put_common_hdr(buffer *stream, enum bmp_message_type type, u32 length)
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{
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bmp_buffer_need(stream, BMP_COMMON_HDR_SIZE);
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bmp_put_u8(stream, BMP_VERSION_3);
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bmp_put_u32(stream, BMP_COMMON_HDR_SIZE + data_size);
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bmp_put_u32(stream, length);
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bmp_put_u8(stream, type);
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}
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static void
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bmp_info_tlv_hdr_serialize(buffer *stream, const enum bmp_info_tlv_type type,
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const char *str)
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bmp_fix_common_hdr(buffer *stream)
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{
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uint length = stream->pos - stream->start;
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put_u32(stream->start + 1, length);
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}
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static void
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bmp_put_info_tlv(buffer *stream, enum bmp_info_tlv_type type, const char *str)
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{
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size_t str_len = strlen(str);
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str_len = MIN(str_len, MIB_II_STR_LEN);
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bmp_buffer_need(stream, 4 + str_len);
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bmp_put_u16(stream, type);
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bmp_put_u16(stream, str_len);
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bmp_put_data(stream, str, str_len);
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@ -304,16 +294,10 @@ bmp_info_tlv_hdr_serialize(buffer *stream, const enum bmp_info_tlv_type type,
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static void
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bmp_init_msg_serialize(buffer *stream, const char *sys_descr, const char *sys_name)
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{
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const size_t sys_descr_len = strlen(sys_descr);
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const size_t sys_name_len = strlen(sys_name);
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// We include MIB-II sysDescr and sysName in BMP INIT MSG so that's why
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// allocated 2x BMP_INFO_TLV_FIX_SIZE memory pool size
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const size_t data_size = (2 * BMP_INFO_TLV_FIX_SIZE) + sys_descr_len + sys_name_len;
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bmp_buffer_need(stream, BMP_COMMON_HDR_SIZE + data_size);
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bmp_common_hdr_serialize(stream, BMP_INIT_MSG, data_size);
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bmp_info_tlv_hdr_serialize(stream, BMP_INFO_TLV_TYPE_SYS_DESCR, sys_descr);
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bmp_info_tlv_hdr_serialize(stream, BMP_INFO_TLV_TYPE_SYS_NAME, sys_name);
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bmp_put_common_hdr(stream, BMP_INIT_MSG, 0);
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bmp_put_info_tlv(stream, BMP_INFO_TLV_TYPE_SYS_DESCR, sys_descr);
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bmp_put_info_tlv(stream, BMP_INFO_TLV_TYPE_SYS_NAME, sys_name);
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bmp_fix_common_hdr(stream);
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}
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static void
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@ -457,7 +441,7 @@ bmp_put_bgp_hdr(buffer *stream, const u8 msg_type, const u16 msg_length)
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}
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/**
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* bmp_per_peer_hdr_serialize - serializes Per-Peer Header
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* bmp_put_per_peer_hdr - serializes Per-Peer Header
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*
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* @is_post_policy: indicate the message reflects the post-policy Adj-RIB-In
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* @peer_addr: the remote IP address associated with the TCP session
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@ -467,7 +451,7 @@ bmp_put_bgp_hdr(buffer *stream, const u8 msg_type, const u16 msg_length)
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* @ts_usec: the time in microseconds when the encapsulated routes were received
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*/
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static void
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bmp_per_peer_hdr_serialize(buffer *stream, const struct bmp_peer_hdr_info *peer)
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bmp_put_per_peer_hdr(buffer *stream, const struct bmp_peer_hdr_info *peer)
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{
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// TODO: ATM we do not support BMP_PEER_TYPE_RD_INSTANCE
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u8 peer_type = peer->global ?
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@ -482,6 +466,7 @@ bmp_per_peer_hdr_serialize(buffer *stream, const struct bmp_peer_hdr_info *peer)
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u32 ts_sec = peer->timestamp TO_S;
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u32 ts_usec = peer->timestamp - (ts_sec S);
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bmp_buffer_need(stream, BMP_PER_PEER_HDR_SIZE);
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bmp_put_u8(stream, peer_type);
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bmp_put_u8(stream, peer_flags);
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bmp_put_u64(stream, 0); // Not supported peer distinguisher
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@ -503,8 +488,8 @@ bmp_route_monitor_msg_serialize(struct bmp_proto *p, const struct bmp_peer_hdr_i
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STACK_BUFFER_INIT(stream, BMP_PER_PEER_HDR_SIZE + BMP_COMMON_HDR_SIZE);
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const size_t data_size = BMP_PER_PEER_HDR_SIZE + update_msg_length;
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bmp_common_hdr_serialize(&stream, BMP_ROUTE_MONITOR, data_size);
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bmp_per_peer_hdr_serialize(&stream, peer);
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bmp_put_common_hdr(&stream, BMP_ROUTE_MONITOR, BMP_COMMON_HDR_SIZE + data_size);
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bmp_put_per_peer_hdr(&stream, peer);
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size_t hdr_sz = stream.pos - stream.start;
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ASSERT_DIE(update_msg >= &p->msgbuf[hdr_sz]);
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@ -519,14 +504,10 @@ bmp_peer_up_notif_msg_serialize(buffer *stream, const struct bmp_peer_hdr_info *
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const ip_addr local_addr, const u16 local_port, const u16 remote_port,
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const adata *sent_msg, const adata *recv_msg)
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{
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const size_t data_size =
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BMP_PER_PEER_HDR_SIZE + BMP_PEER_UP_NOTIF_MSG_FIX_SIZE +
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BGP_HEADER_LENGTH + sent_msg->length + BGP_HEADER_LENGTH + recv_msg->length;
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bmp_buffer_need(stream, BMP_COMMON_HDR_SIZE + data_size);
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bmp_common_hdr_serialize(stream, BMP_PEER_UP_NOTIF, data_size);
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bmp_per_peer_hdr_serialize(stream, peer);
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bmp_put_common_hdr(stream, BMP_PEER_UP_NOTIF, 0);
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bmp_put_per_peer_hdr(stream, peer);
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bmp_buffer_need(stream, BMP_PEER_UP_NOTIF_MSG_FIX_SIZE);
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bmp_put_ipa(stream, local_addr);
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bmp_put_u16(stream, local_port);
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bmp_put_u16(stream, remote_port);
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@ -534,20 +515,16 @@ bmp_peer_up_notif_msg_serialize(buffer *stream, const struct bmp_peer_hdr_info *
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bmp_put_data(stream, sent_msg->data, sent_msg->length);
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bmp_put_bgp_hdr(stream, PKT_OPEN, BGP_HEADER_LENGTH + recv_msg->length);
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bmp_put_data(stream, recv_msg->data, recv_msg->length);
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bmp_fix_common_hdr(stream);
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}
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static void
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bmp_peer_down_notif_msg_serialize(buffer *stream, const struct bmp_peer_hdr_info *peer,
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const struct bmp_peer_down_info *info)
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{
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const size_t data_size = BMP_PER_PEER_HDR_SIZE + 1 +
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(((info->reason == BMP_PEER_DOWN_REASON_LOCAL_BGP_NOTIFICATION) ||
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(info->reason == BMP_PEER_DOWN_REASON_REMOTE_BGP_NOTIFICATION)) ? (BGP_HEADER_LENGTH + 2 + info->length) :
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(info->reason == BMP_PEER_DOWN_REASON_LOCAL_NO_NOTIFICATION) ? 2 : 0);
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bmp_buffer_need(stream, BMP_COMMON_HDR_SIZE + data_size);
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bmp_common_hdr_serialize(stream, BMP_PEER_DOWN_NOTIF, data_size);
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bmp_per_peer_hdr_serialize(stream, peer);
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bmp_put_common_hdr(stream, BMP_PEER_DOWN_NOTIF, 0);
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bmp_put_per_peer_hdr(stream, peer);
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bmp_put_u8(stream, info->reason);
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@ -557,7 +534,7 @@ bmp_peer_down_notif_msg_serialize(buffer *stream, const struct bmp_peer_hdr_info
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case BMP_PEER_DOWN_REASON_REMOTE_BGP_NOTIFICATION:;
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uint bgp_msg_length = BGP_HEADER_LENGTH + 2 + info->length;
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bmp_buffer_need(stream, bgp_msg_length);
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bmp_put_bgp_hdr(stream, bgp_msg_length, PKT_NOTIFICATION);
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bmp_put_bgp_hdr(stream, PKT_NOTIFICATION, bgp_msg_length);
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bmp_put_u8(stream, info->err_code);
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bmp_put_u8(stream, info->err_subcode);
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bmp_put_data(stream, info->data, info->length);
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@ -567,6 +544,8 @@ bmp_peer_down_notif_msg_serialize(buffer *stream, const struct bmp_peer_hdr_info
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bmp_put_u16(stream, info->fsm_code);
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break;
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}
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bmp_fix_common_hdr(stream);
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}
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@ -1044,20 +1023,16 @@ bmp_peer_down_(struct bmp_proto *p, ea_list *bgp, struct bgp_session_close_ad *b
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static void
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bmp_send_termination_msg(struct bmp_proto *p,
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const enum bmp_term_reason reason)
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bmp_send_termination_msg(struct bmp_proto *p, enum bmp_term_reason reason)
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{
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const size_t term_msg_hdr_size = BMP_TERM_INFO_TYPE_SIZE
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+ BMP_TERM_INFO_LEN_FIELD_SIZE
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+ BMP_TERM_REASON_CODE_SIZE;
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const size_t term_msg_size = BMP_COMMON_HDR_SIZE + term_msg_hdr_size;
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buffer stream = bmp_default_buffer(p);
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bmp_buffer_need(&stream, term_msg_size);
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bmp_common_hdr_serialize(&stream, BMP_TERM_MSG, term_msg_hdr_size);
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bmp_put_common_hdr(&stream, BMP_TERM_MSG, 0);
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bmp_buffer_need(&stream, 6);
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bmp_put_u16(&stream, BMP_TERM_INFO_REASON);
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bmp_put_u16(&stream, BMP_TERM_REASON_CODE_SIZE); // 2-byte code indication the reason
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bmp_put_u16(&stream, 2); // Length of the reason
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bmp_put_u16(&stream, reason);
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bmp_fix_common_hdr(&stream);
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if (p->sk->tbuf)
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bmp_tx_buffer_free(p, SKIP_BACK(struct bmp_tx_buffer, data, p->sk->tbuf));
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