Difference between revisions of "Llk-packet-diagram"
| Line 16: | Line 16: | ||
<div id="1"> | <div id="1"> | ||
| − | 1. Timer location: net/socket.c:1551, sys_send | + | 1. Timer location: net/socket.c:1551, sys_send. |
Data is copied from user to kernel space via copy_from_user | Data is copied from user to kernel space via copy_from_user | ||
</div> | </div> | ||
<div id="2"> | <div id="2"> | ||
| − | 2. Timer location: net/ipv4/af_inet.c:661, inet_sendmsg | + | 2. Timer location: net/ipv4/af_inet.c:661, inet_sendmsg. |
Kernel buffer is wrapped into a BSD socket data structure | Kernel buffer is wrapped into a BSD socket data structure | ||
</div> | </div> | ||
Revision as of 13:44, 11 October 2005
1. Timer location: net/socket.c:1551, sys_send. Data is copied from user to kernel space via copy_from_user
2. Timer location: net/ipv4/af_inet.c:661, inet_sendmsg. Kernel buffer is wrapped into a BSD socket data structure
3. Timer location: net/ipv4/tcp_output.c:374, tcp_transmit_skb TCP wrapper placed around data.
4. Timer location: net/ipv4/ip_output.c:240, ip_finish_output IP wrapper placed around data.
5. Timer location: net/ipv4/ip_output.c:224, tp_hard_start_xmit Data is copied from kernel memory to card memory and transmitted over the line. This begins in hard_start_xmit, which is a function defined by the driver.
6. Timer location: net/core/dev.c:1843,1849, process_backlog Data is taken from line to card memory by driver then copied from card memorty to kernel memory via skb buffer dequeuing (skb_dequeue).
7. Timer location: net/ipv4/ip_input.c:293, ip_rcv_finish
8. Timer location: net/ipv4/tcp_ipv4.c:1744, tcp_v4_rcv
9. Timer location: net/ipv4/tcp_input.c:4362,4398,4449, tcp_rcv_established
10. Timer location: net/socket.c:1601, sys_recvfrom
