a05b64d432
vsock is a socket address family for communicating into and out of virtual machines. Addresses have a port and CID. The CID is unique to each virtual machine on the computer. The VM host always has CID 2. http://man7.org/linux/man-pages/man7/vsock.7.html Inside the android guest, the adb daemon hosts a vsock server with VMADDR_CID_ANY, automatically using the guest CID. The adb server can now connect to addresses of the form vsock:cid:port, where the CID must be specified and the port defaults to 5555. This is a significant speed improvement for ADB connections in Cuttlefish, with 150-200 MB/s for `adb push` and 100-150 MB/s for `adb pull`. It also allows removing some proxying steps from Cuttlefish, simplifying the full connection path, and removes a dependency on the unstable ivshmem protocol. Commands tested against a Cuttlefish VM with CID 3: adb connect vsock:3:5555 adb -s vsock:3:5555 shell adb disconnect vsock:3:5555 Supporting "adb disconnect" and "adb -s" required modifying some of the parts that parse addresses / serials. push/pull trials with native adb vsock support in cuttlefish: 100m: 1 file pushed. 297.6 MB/s (104857600 bytes in 0.336s) 100m: 1 file pushed. 270.3 MB/s (104857600 bytes in 0.370s) 100m: 1 file pushed. 271.7 MB/s (104857600 bytes in 0.368s) 100m: 1 file pushed. 250.5 MB/s (104857600 bytes in 0.399s) 100m: 1 file pushed. 277.1 MB/s (104857600 bytes in 0.361s) 100m: 1 file pushed. 263.5 MB/s (104857600 bytes in 0.379s) 100m: 1 file pushed. 242.6 MB/s (104857600 bytes in 0.412s) 100m: 1 file pushed. 271.8 MB/s (104857600 bytes in 0.368s) 100m: 1 file pushed. 267.1 MB/s (104857600 bytes in 0.374s) /data/local/tmp/100m: 1 file pulled. 212.8 MB/s (104857600 bytes in 0.470s) /data/local/tmp/100m: 1 file pulled. 236.7 MB/s (104857600 bytes in 0.423s) /data/local/tmp/100m: 1 file pulled. 201.2 MB/s (104857600 bytes in 0.497s) /data/local/tmp/100m: 1 file pulled. 255.6 MB/s (104857600 bytes in 0.391s) /data/local/tmp/100m: 1 file pulled. 199.6 MB/s (104857600 bytes in 0.501s) /data/local/tmp/100m: 1 file pulled. 214.6 MB/s (104857600 bytes in 0.466s) /data/local/tmp/100m: 1 file pulled. 254.2 MB/s (104857600 bytes in 0.393s) /data/local/tmp/100m: 1 file pulled. 212.5 MB/s (104857600 bytes in 0.471s) /data/local/tmp/100m: 1 file pulled. 218.9 MB/s (104857600 bytes in 0.457s) /data/local/tmp/100m: 1 file pulled. 223.6 MB/s (104857600 bytes in 0.447s) Bug: 121166534 Change-Id: I50f21fb5c9acafb8daa789df4e28c9e1bbbbf2ef Test: adb connect/shell/disconnect |
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| .. | ||
| posix | ||
| win32 | ||
| chrono.h | ||
| errno.cpp | ||
| errno.h | ||
| network.h | ||
| stat.h | ||
| stat_test.cpp | ||
| uio.h | ||
| vm_sockets.h | ||