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authorTom Gundersen <teg@jklm.no>2014-11-01 19:02:44 +0100
committerTom Gundersen <teg@jklm.no>2014-11-01 19:02:44 +0100
commit1caa12d0a8a818d5f2545aab809b3fdfec73871d (patch)
treeb125e9822a152ddbe253cf1c852cf65ee2dd8871 /src/libsystemd-network
parentbab47929613f9e930dd241a01483b37d14b59c69 (diff)
sd-dhcp-lease: use shared default prefixlen function
Also change the default prefixlen function to only access the first octet of the in_addr.
Diffstat (limited to 'src/libsystemd-network')
-rw-r--r--src/libsystemd-network/dhcp-lease-internal.h2
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c21
2 files changed, 4 insertions, 19 deletions
diff --git a/src/libsystemd-network/dhcp-lease-internal.h b/src/libsystemd-network/dhcp-lease-internal.h
index d4675f3e47..9fb4f4b4e4 100644
--- a/src/libsystemd-network/dhcp-lease-internal.h
+++ b/src/libsystemd-network/dhcp-lease-internal.h
@@ -35,7 +35,7 @@
struct sd_dhcp_route {
struct in_addr dst_addr;
struct in_addr gw_addr;
- uint8_t dst_prefixlen;
+ unsigned char dst_prefixlen;
};
struct sd_dhcp_lease {
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index f4979f7da7..f6b572a996 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -310,23 +310,6 @@ static int lease_parse_in_addrs_pairs(const uint8_t *option, size_t len, struct
return lease_parse_in_addrs_aux(option, len, ret, ret_size, 2);
}
-static int class_prefixlen(uint8_t msb_octet, uint8_t *ret) {
- if (msb_octet < 128)
- /* Class A */
- *ret = 8;
- else if (msb_octet < 192)
- /* Class B */
- *ret = 16;
- else if (msb_octet < 224)
- /* Class C */
- *ret = 24;
- else
- /* Class D or E -- no subnet mask */
- return -ERANGE;
-
- return 0;
-}
-
static int lease_parse_routes(const uint8_t *option, size_t len, struct sd_dhcp_route **routes,
size_t *routes_size, size_t *routes_allocated) {
@@ -348,8 +331,10 @@ static int lease_parse_routes(const uint8_t *option, size_t len, struct sd_dhcp_
while (len >= 8) {
struct sd_dhcp_route *route = *routes + *routes_size;
+ int r;
- if (class_prefixlen(*option, &route->dst_prefixlen) < 0) {
+ r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen);
+ if (r < 0) {
log_error("Failed to determine destination prefix length from class based IP, ignoring");
continue;
}