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CGH0S7
2025-11-19 09:02:51 +08:00
parent e4c7bf757d
commit e97093b2f5
4 changed files with 93 additions and 741 deletions
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115
openflow/main_user_openflow.c
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@@ -162,12 +162,20 @@ handle_opfmsg_features_request(struct ofp_buffer *ofpbuf)
//TODO
/* 构建feature回应报文，把交换机的功能信息发送给控制器（指针变量feature_reply_msg赋值） */
feature_reply_msg->datapath_id = htonll(0x1234 << 48);
feature_reply_msg->n_buffers = 0x100; // 256
feature_reply_msg->n_tables = 1;
feature_reply_msg->auxiliary_id = 0;
feature_reply_msg->capabilities = htonl(0x0007);
feature_reply_msg->reserved = htonl(0x0000);
feature_reply_msg->datapath_id = 0x6655443322110000;
feature_reply_msg->n_buffers = 0x100;
feature_reply_msg->n_tables = 0x02;
feature_reply_msg->auxiliary_id = 0;
feature_reply_msg->capabilities = htonl(0x0000004f);
feature_reply_msg->reserved = htonl(0x00000000);
// feature_reply_msg->datapath_id = htonll(0x1234 << 48);
// feature_reply_msg->n_buffers = 0x100; // 256
// feature_reply_msg->n_tables = 1;
// feature_reply_msg->auxiliary_id = 0;
// feature_reply_msg->capabilities = htonl(0x0007);
// feature_reply_msg->reserved = htonl(0x0000);
//调用系统发送接口，发送回应报文
send_openflow_message(ofpbuf_reply,feature_reply_len);
@@ -247,78 +255,41 @@ handle_ofpmsg_desc(struct ofp_buffer *ofpbuf)
static enum ofperr
handle_ofpmsg_flow_stats(struct ofp_buffer *ofpbuf)
{
int i = 0, reply_len = 0, flow_stats_offset;
struct ofp_flow_stats *current_flow_stats = NULL;
struct ofp_buffer *reply_buffer = NULL;
struct ofp_multipart *multipart_reply = NULL;
int i = 0, reply_len = 0, flow_stats_offset;
struct ofp_flow_stats *current_flow_stats = NULL;
struct ofp_buffer *reply_buffer = NULL;
struct ofp_multipart *multipart_reply = NULL;
// 计算长度
for (; i < FAST_RULE_CNT; i++) {
if (flow_stats_addr[i] != 0) {
reply_len += ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length);
}
}
reply_len += sizeof(struct ofp_header) + sizeof(struct ofp_multipart);
// 计算长度
for (; i < FAST_RULE_CNT; i++) {
if (flow_stats_addr[i] != NULL) {
reply_len += ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length);
}
}
reply_len += sizeof(struct ofp_header) + sizeof(struct ofp_multipart);
// 构造响应包
reply_buffer = (struct ofp_buffer *)build_opfmsg_reply_ofpbuf(OFPT_MULTIPART_REPLY, ofpbuf->header.xid, reply_len);
multipart_reply = (struct ofp_multipart *)reply_buffer->data;
multipart_reply->type = htons(OFPMP_FLOW); // 标识信息
multipart_reply->flags = htonl(OFPMP_REPLY_MORE_NO); //这条不用回
// 构造响应包
reply_buffer = (struct ofp_buffer *)build_reply_ofpbuf(OFPT_MULTIPART_REPLY, ofpbuf->header.xid, reply_len);
multipart_reply = (struct ofp_multipart *)reply_buffer->data;
multipart_reply->type = htons(OFPMP_FLOW); // 标识信息
multipart_reply->flags = htonl(OFPMP_REPLY_MORE_NO); //这条不用回
// 填充包体
flow_stats_offset = sizeof(struct ofp_multipart);
current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
// 填充包体
flow_stats_offset = sizeof(struct ofp_multipart);
current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
for (i = 0; i < FAST_RULE_CNT; i++) {
if (flow_stats_addr[i] != 0) {
memcpy(current_flow_stats, (void *)flow_stats_addr[i], ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length));
flow_stats_offset += ntohs(current_flow_stats->length);
current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
}
}
for (i = 0; i < FAST_RULE_CNT; i++) {
if (flow_stats_addr[i] != NULL) {
memcpy(current_flow_stats, flow_stats_addr[i], ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length));
flow_stats_offset += ntohs(current_flow_stats->length);
current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
}
}
send_openflow_message(reply_buffer, reply_len);
send_openflow_message(reply_buffer, reply_len);
return HANDLE;
return HANDLE;
}
// handle_ofpmsg_flow_stats(struct ofp_buffer *ofpbuf)
// {
// int i = 0, reply_len = 0, flow_stats_offset;
// struct ofp_flow_stats *current_flow_stats = NULL;
// struct ofp_buffer *reply_buffer = NULL;
// struct ofp_multipart *multipart_reply = NULL;
//
// // 计算长度
// for (; i < FAST_RULE_CNT; i++) {
// if (flow_stats_addr[i] != NULL) {
// reply_len += ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length);
// }
// }
// reply_len += sizeof(struct ofp_header) + sizeof(struct ofp_multipart);
//
// // 构造响应包
// reply_buffer = (struct ofp_buffer *)build_reply_ofpbuf(OFPT_MULTIPART_REPLY, ofpbuf->header.xid, reply_len);
// multipart_reply = (struct ofp_multipart *)reply_buffer->data;
// multipart_reply->type = htons(OFPMP_FLOW); // 标识信息
// multipart_reply->flags = htonl(OFPMP_REPLY_MORE_NO); //这条不用回
//
// // 填充包体
// flow_stats_offset = sizeof(struct ofp_multipart);
// current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
//
// for (i = 0; i < FAST_RULE_CNT; i++) {
// if (flow_stats_addr[i] != NULL) {
// memcpy(current_flow_stats, flow_stats_addr[i], ntohs(((struct ofp_flow_stats *)flow_stats_addr[i])->length));
// flow_stats_offset += ntohs(current_flow_stats->length);
// current_flow_stats = (struct ofp_flow_stats *)&reply_buffer->data[flow_stats_offset];
// }
// }
//
// send_openflow_message(reply_buffer, reply_len);
//
// return HANDLE;
// }
/**
* @brief 处理OpenFlow Aggregate Stats Request消息
@@ -390,7 +361,7 @@ handle_ofpmsg_table(struct ofp_buffer *ofpbuf)
ofpmp_reply->type = htons(OFPMP_TABLE);
ofpmp_reply->flags = htonl(OFPMP_REPLY_MORE_NO);
for(i=0;i<1;i++) // 关于为什么写成1，见line 114
for(i=0;i<1;i++)
{
ofpmp_reply->table_stats[i].matched_count = htonll(0);
ofpmp_reply->table_stats[i].table_id = i;