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qosmngr: add support for dhcp options as classification params

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DHCP option value 60, 61 and 77 can now be used to identify lan
clients. Details of UCI as follows:

config classify
    option src_vendor_class_id 'abc' // DHCP option 60.
    option dst_vendor_class_id 'abc' // DHCP option 60.
    option src_client_id 'xyz'       // DHCP option 61
    option dst_client_id 'xyz'       // DHCP option 61
    option src_user_class_id 'dfg'   // DHCP option 77
    option dst_user_class_id 'dfg'   // DHCP option 77
This commit is contained in:
Rahul 2020-10-14 11:31:48 +05:30
parent d829f00e07
commit 98071d157d
1 changed files with 74 additions and 0 deletions
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74
qosmngr/files/lib/qos/broadcom.sh
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@ -204,6 +204,8 @@ broute_append_rule() {
handle_ebtables_rules() { handle_ebtables_rules() {
sid=$1 sid=$1
local is_l2_rule=0 local is_l2_rule=0
local src_dhcp_options=""
local dst_dhcp_options=""
init_broute_rule init_broute_rule
@ -213,6 +215,14 @@ handle_ebtables_rules() {
config_get pcp_check "$sid" "pcp_check" config_get pcp_check "$sid" "pcp_check"
config_get eth_type "$sid" "ethertype" config_get eth_type "$sid" "ethertype"
config_get vid "$sid" "vid_check" config_get vid "$sid" "vid_check"
config_get dhcp_type "$sid" "dhcp_type" # dhcpv4 or v6
config_get src_vcid "$sid" "src_vendor_class_id" # dhcp option 60
config_get dst_vcid "$sid" "dst_vendor_class_id" # dhcp option 60
config_get src_clid "$sid" "src_client_id" # dhcp option 61
config_get dst_clid "$sid" "dst_client_id" # dhcp option 61
config_get src_ucid "$sid" "src_user_class_id" # dhcp option 77
config_get dst_ucid "$sid" "dst_user_class_id" # dhcp option 77
config_get traffic_class "$sid" "traffic_class" config_get traffic_class "$sid" "traffic_class"
if [ -n "$src_if" ]; then if [ -n "$src_if" ]; then
@ -250,6 +260,70 @@ handle_ebtables_rules() {
is_l2_rule=1 is_l2_rule=1
fi fi
# first process options that will help figure our source mac address
# dhcp option for "vendor class id"
if [ -n "$src_vcid" ]; then
src_dhcp_options="$src_dhcp_options vcid=$src_vcid"
is_l2_rule=1
fi
# dhcp option for "client id"
if [ -n "$src_clid" ]; then
src_dhcp_options="$src_dhcp_options clid=$src_clid"
is_l2_rule=1
fi
# dhcp option for "user class id"
if [ -n "$src_ucid" ]; then
src_dhcp_options="$src_dhcp_options ucid=$src_ucid"
is_l2_rule=1
fi
# if src mac is already a classification criteria, then it
# does not really make sense to add it as a criteria to
# filter packets again based on source mac
if [ -n "$src_dhcp_options" -a -z "$src_mac" ]; then
comp="$(grep -i "$src_dhcp_options" /tmp/dhcp.client.options)"
if [ -n "$comp" ]; then
s_mac_add="$(echo $comp | head -n1 | awk '{print $1;}')"
if [ -n "$s_mac_add" ]; then
broute_filter_on_src_mac $s_mac_add
fi
fi
fi
# Now process options that will help figure our destination mac address
# dhcp option for "vendor class id"
if [ -n "$dst_vcid" ]; then
dst_dhcp_options="$dst_dhcp_options vcid=$dst_vcid"
is_l2_rule=1
fi
# dhcp option for "client id"
if [ -n "$dst_clid" ]; then
dst_dhcp_options="$dst_dhcp_options clid=$dst_clid"
is_l2_rule=1
fi
# dhcp option for "user class id"
if [ -n "$dst_ucid" ]; then
dst_dhcp_options="$dst_dhcp_options ucid=$dst_ucid"
is_l2_rule=1
fi
# if dst mac is already a classification criteria, then it
# does not really make sense to add it as a criteria to
# filter packets again based on dstination mac
if [ -n "$dst_dhcp_options" -a -z "$dst_mac" ]; then
comp="$(grep -i "$dst_dhcp_options" /tmp/dhcp.client.options)"
if [ -n "$comp" ]; then
d_mac_add="$(echo $comp | head -n1 | awk '{print $1;}')"
if [ -n "$d_mac_add" ]; then
broute_filter_on_dst_mac $d_mac_add
fi
fi
fi
if [ $is_l2_rule -eq 0 ]; then if [ $is_l2_rule -eq 0 ]; then
return return
fi fi