diff options
Diffstat (limited to 'package/network/services/ppp/patches/101-debian_close_dev_ppp.patch')
-rw-r--r-- | package/network/services/ppp/patches/101-debian_close_dev_ppp.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/package/network/services/ppp/patches/101-debian_close_dev_ppp.patch b/package/network/services/ppp/patches/101-debian_close_dev_ppp.patch new file mode 100644 index 0000000000..232b10b521 --- /dev/null +++ b/package/network/services/ppp/patches/101-debian_close_dev_ppp.patch @@ -0,0 +1,28 @@ +pppd: Close already open ppp descriptors + +When using the kernel PPPoE driver in conjunction with the "persist" option, +the already open descriptor to /dev/ppp is not closed when the link is +reestablished. This eventually leads to high CPU load because the stray +descriptors are always reported as ready by select(). + +This patch closes the descriptor if it is already open when establishing a +new connection. It originated from the Debian project. + +Signed-off-by: Jo-Philipp Wich <jow@openwrt.org> + +--- a/pppd/sys-linux.c ++++ b/pppd/sys-linux.c +@@ -453,6 +453,13 @@ int generic_establish_ppp (int fd) + if (new_style_driver) { + int flags; + ++ /* if a ppp_fd is already open, close it first */ ++ if(ppp_fd > 0) { ++ close(ppp_fd); ++ remove_fd(ppp_fd); ++ ppp_fd = -1; ++ } ++ + /* Open an instance of /dev/ppp and connect the channel to it */ + if (ioctl(fd, PPPIOCGCHAN, &chindex) == -1) { + error("Couldn't get channel number: %m"); |