File Descriptors, Stacks, and Sockets

For an Onloaded process it is possible to identify the file descriptors, Onload stacks and sockets being accelerated by Onload. Use the /proc/<PID>/fd file - supplying the PID of the accelerated process. For example:

# ls -l /proc/9886/fd
total 0
lrwx------ 1 root root 64 May 14 14:09 0 -> /dev/pts/0
lrwx------ 1 root root 64 May 14 14:09 1 -> /dev/pts/0
lrwx------ 1 root root 64 May 14 14:09 2 -> /dev/pts/0
lrwx------ 1 root root 64 May 14 14:09 3 -> onload:[tcp:6:3]
lrwx------ 1 root root 64 May 14 14:09 4 -> /dev/pts/0
lrwx------ 1 root root 64 May 14 14:09 5 -> /dev/onload
lrwx------ 1 root root 64 May 14 14:09 6 -> onload:[udp:6:2]

Accelerated file descriptors are listed as symbolic links to /dev/onload. Accelerated sockets are described in [protocol:stack:socket] format.