PentHertz
/
srsLTE
mirror of https://github.com/PentHertz/srsLTE.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added comment to match function. Fixed mistake in IP flags.

This commit is contained in:
Pedro Alvarez 2019-06-05 14:34:36 +01:00 committed by Andre Puschmann
parent 8b417a4259
commit fa7d91e1c9
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
srsue/src/stack/upper/tft_packet_filter.cc
View File

@ -93,13 +93,26 @@ tft_packet_filter_t::tft_packet_filter_t(uint8_t eps_bearer_id, const LIBLTE_MME
}
}
/*
* Implements packet matching against the packet filter componenets as specified in TS 24.008, section 10.5.6.12.
*
* This function will only return true if all the active filter components match (logical AND).
* It will return false as soon as any of the filter components does not match.
*
* Note: 'active_filters' is a bitmask; bits set to '1' represent active filter components.
*/
bool tft_packet_filter_t::match(const srslte::unique_byte_buffer_t& pdu)
{
uint16_t ip_flags = IPV4_REMOTE_ADDR_TYPE | IPV4_LOCAL_ADDR_TYPE | IPV6_REMOTE_ADDR_TYPE |
IPV6_REMOTE_ADDR_LENGTH_TYPE | IPV6_LOCAL_ADDR_LENGTH_TYPE;
uint16_t ip_flags = IPV4_REMOTE_ADDR_FLAG | IPV4_LOCAL_ADDR_FLAG | IPV6_REMOTE_ADDR_FLAG |
IPV6_REMOTE_ADDR_LENGTH_FLAG | IPV6_LOCAL_ADDR_LENGTH_FLAG;
uint16_t port_flags =
SINGLE_LOCAL_PORT_FLAG | LOCAL_PORT_RANGE_FLAG | SINGLE_REMOTE_PORT_FLAG | REMOTE_PORT_RANGE_FLAG;
// Check if there is any active filter
if (active_filters == 0) {
return false;
}
// Match IP Header to active filters
if ((active_filters & ip_flags) != 0 && !match_ip(pdu)) {
return false;