SYS_ERR is for logging an error from the (operating) system including
the errno value. For general logging, we have DEBUGP/LOGP. Let's
convert the gtp-kernel logging over. This also fixes the related line
ending mess-up as SYS_ERR adds a LF while LOGP/DEBUGP don't.
Change-Id: Idb4069a28227b770e20d62bf306cd294f47146ae
When genl_socket_open() succeeds but genl_lookup_family() fails,
we have to clean up the socket that we just opened.
This requires a new version of libgtpnl :/
Change-Id: I31df046530347f88cb7b16c37a899b456ed1b080
We have to factor out the "run once" code and make sure to really
only run that once, while the per-device code remains in the
gtp_kernel_init() function.
Change-Id: Iba5bd71e4b725eef59fe4f233fbb965e396a06c3
Whether or not GTP kernel support is enabled is the property of a
given APN, and not a global state variable.
Change-Id: Iff3bd8a52bd6c20f9811ee41ff700486d08591f3
The existing kernel GTP support code inherited from OpenGGSN was overly
simplistic and didn't support multiple GTP devices or user-defined GTP
device names. Let's remove that restriction in this patch
Change-Id: I51df223788fd5b7cf8099463b8aa0ca4a4fd1c96
When we branched off osmo-ggsn from the old openggsn code base, the
support for kernel-gtp got temporarily removed. This patch
re-introduces support for handling the GTP-U plane in the Linux kernel
by means of libgtpnl + the kernel GTP-U driver.
This only works for IPv4 at the moment, until the kernel GTP-U code
gains IPv6 support.
Kernel GTP currently also is restricted to a single APN per GSN.
Change-Id: Ieb1bc1bd0d51d41947f0abd6ebbc2e5d102592d6
Rather than taking an explicit in_addr, prefix_length and a
string-formatted prefix, let's pass in an in46_prefix and derive
the other representations from it.
Also, don't refer to a no-longer-existing global 'ipup' variable but
add it as a function argument.
Change-Id: Ife87142c86589b4fa4062d62afe3670467548589
This ensures that in case of error, any caller can still safely
call talloc_free() on the blacklist pointerm as free on NULL
is well-defined. With the code prior to this patch we fear
a double-free.
Change-Id: Idc511cb3f0dfb922920aba8f88ea77df1722ecdc
netdev_ip_local_get() is a generalized version of tun_ip_local_get()
which supports the net device as argument, rather than a tun_t.
Change-Id: I072aa1a55e7bf110706e9207021b776d9b977fb6
* we have to use stataddr, not addr (dynamic)
* we have to multiply the length of the address by 8 to get its bit length
* we can simplify the -1 +1 logic (like dynamic)
Change-Id: I174102051bef95f7df34b7d7c480a00ae408be7d
Fixes: Coverity CID#174189
The 'struct tun' curently only has an in_addr (v4-only) member to
store the address of the tun device, so let's not attempt to store
an IPv6 address in it.
FIXME: This entire code needs an overhaul. The assumption that there's
only one address, and only either v6 or v4 is broken to begin with.
Change-Id: If0b626d688841d6e0a3867834f4cb1b70084050e
Fixes: Coverity CID#174278
The string buffer allocated for the IMSI must be sized for a length
twice the number of input bytes (each byte has two nibbles) plus 1
byte for NUL. We missed the "twice" part :/
Change-Id: I1ecaa811815ae522af71feabc5d0c1ea8b4edde9
Fixes: Coverity CID#174336
In create_pdp_conf(), we have to free() any strings both in the
success and in the error case.
Change-Id: If59cc8d6d151c123f46c1d029091209fd82b3c8e
Fixes: Coverity CID#187636, CID#187633
In proc_ipv6_conf_read() we allocatea buffer on the stack but
forgot the terminating NUL byte.
Change-Id: I54126d8bc08c137859f2de4b47ef23fc0714fdd7
Fixes: Coverity CID#178641
In Change-Id Ie631880155513b1b78d1e9dd473dc5dc50e05943 we changed
LIBVERSION but didn't update debian/control.
Change-Id: I7a1349e9609cb455c0fe9d63d085e7c44dff96ef
See osmo-ci change I2409b2928b4d7ebbd6c005097d4ad7337307dd93 for rationale.
Depends: I2409b2928b4d7ebbd6c005097d4ad7337307dd93
Change-Id: I1424dff06c7d4f695af0936671ad6faa504aaf16
Commit dda21ed7d4 modified previous calls
to ippool_new() removing the pass of flags to avoid allocating certain
problematic IPs from the pool to MS, such as the network, gateway and
broadcast IPs.
Today I did some unsucessful tests with osmo-ggsn with a pool "ip prefix
dynamic 176.16.222.0/24", and thus IP 176.16.222.0 was being assigned to
the MS. De-capsulated DNS packets were received in the tun interface,
but the Linux system in there was unable to correctly forward the
packets to the gateway interface connected to the Internet. However,
adding a second MS which got 176.16.222.1 had its packets forwarded
correctly.
However, previous implementation relies on flag IPPOOL_NOGATEWAY flag to
blindly blacklist first IP after the network ip (ie, .0 and .1 are
removed), which limits the IP reserved for the tun device to be .1. If a
different IP in the range is assigned, it may cause issues. As a result,
a blacklist is introduced in this commit to dynamically fetch the tun IP
address and exlucde it from the pool of available IPs.
Change-Id: I8e91f7280d60490c858a769dd578c1c8e54e9243
Add support for IPv4 and IPv6 global IPs. Also return the prefix length
of the IP address by using a in46_prefix.
Change-Id: I277af191dc611b6bbcb83479f4ae338083740322
Take the chance this commit is changing test output to also remove use
of IPPOOL_NOGATEWAY which is going to be removed soon, and instead test
IPPOOL_NOBROADCAST.
Change-Id: I95c24bc690490155bec9e3933d678e4668d7745f
There's no point in sgsnemu doing a poor mans reimplementation
of what the C library provides already by means of getprotobynumber()
Change-Id: I8cdc460e4fa5d86d80addf6e5f341d2d80093a35
We don't need to export those to the global name space as they're
not called from code in other files.
Change-Id: I454249335ba46abdb3afbc669c4a06a06f39ae72
When sgsnemu is used for an IPv6 pdp context, we rely on the router
discovery procedure and SLAAC to set the correct IPv6 address/prefix
on the tun device. This requires the system to be configure to accept
router-advertisements on the tun device. Let's print a warning
if accept_ra for the specific tun device is set to a wrong value.
We're leaving it up to the user to either set a system-wide
/proc/sys/net/ipv6/conf/default/accept_ra or to configure this in an
ip-up script used together with sgsnemu.
Change-Id: I563092ca35bc74f035a5023e11256779aac46e11
The gengetopt syntax can specify that a particular command line argument
depends on some other argument/option present. We can use this to
provide useful feedback to the user at the command line parsing state,
like --pingrate making no sense without --pinghost being specified.
Change-Id: Ief27275e90e6bce23aed1e83874dbac98dd0926b
If the EUA in the Create PDP Context Request was not supported by
the given APN (e.g. IPv6 request for a v4-only APN), we crashed.
Avoid this and add proper handling of this error case.
Change-Id: I8d1f7ec727c5d2d4427232015f81ed57d3440dff
This way, multiple sgsnemu instances can be runnig in parallel, each
of them creating a different tun device for their respective PDP context
Change-Id: Id12fbadf924a60db255b6d51b9f647aa51dd2e16
This doesn't yet cover all the functions in gtpie.[ch], but testing half
of them is better than not testing any of them, so let's merge this
current state with a couple of TDOO's on what we still need to test.
Change-Id: I30a6dd8a01b7a074ef2d3936d186dfff6c79e6c0
gtpie_decaps() always had this right, but the encapsulation functions
treated it as 8-byte fixed length IE.
I hope we had a chance to convert all of this to the normal libosmogsm
tlv_parser one day. This would have one description table for all TLV
types which then is used from encoder and decoder.
Change-Id: I48471f2735511806ac424b5ffc1929e85bb156f3
Harald Welte
Neels Hofmeyr
Pau Espin