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| author | Denys Vlasenko | 2019-05-10 15:55:12 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2019-05-10 15:55:12 +0200 |
| commit | 15021f393d3d19d689028fceb5c35da930059430 (patch) | |
| tree | 262ab061ef238b5480933fd3cf3bec26036c29e6 | |
| parent | 94f607a9045481b614cac1b319bd435af01b8860 (diff) | |
| download | busybox-15021f393d3d19d689028fceb5c35da930059430.zip busybox-15021f393d3d19d689028fceb5c35da930059430.tar.gz | |
udhcpd: code shrink
function old new delta
is_nip_reserved_as_static - 28 +28
get_static_nip_by_mac 43 47 +4
udhcpd_main 1459 1454 -5
send_offer 449 444 -5
read_leases 309 299 -10
is_nip_reserved 20 - -20
packed_usage 33283 33243 -40
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/4 up/down: 32/-80) Total: -48 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/udhcp/dhcpd.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c index d248d2b..c46e172 100644 --- a/networking/udhcp/dhcpd.c +++ b/networking/udhcp/dhcpd.c @@ -70,8 +70,10 @@ static void add_static_lease(struct static_lease **st_lease_pp, } /* Find static lease IP by mac */ -static uint32_t get_static_nip_by_mac(struct static_lease *st_lease, void *mac) +static uint32_t get_static_nip_by_mac(void *mac) { + struct static_lease *st_lease = server_config.static_leases; + while (st_lease) { if (memcmp(st_lease->mac, mac, 6) == 0) return st_lease->nip; @@ -81,8 +83,10 @@ static uint32_t get_static_nip_by_mac(struct static_lease *st_lease, void *mac) return 0; } -static int is_nip_reserved(struct static_lease *st_lease, uint32_t nip) +static int is_nip_reserved_as_static(uint32_t nip) { + struct static_lease *st_lease = server_config.static_leases; + while (st_lease) { if (st_lease->nip == nip) return 1; @@ -288,7 +292,7 @@ static uint32_t find_free_or_expired_nip(const uint8_t *safe_mac, unsigned arppi if (nip == server_config.server_nip) goto next_addr; /* is this a static lease addr? */ - if (is_nip_reserved(server_config.static_leases, nip)) + if (is_nip_reserved_as_static(nip)) goto next_addr; lease = find_lease_by_nip(nip); @@ -518,13 +522,13 @@ static NOINLINE void read_leases(const char *file) expires = 0; /* Check if there is a different static lease for this IP or MAC */ - static_nip = get_static_nip_by_mac(server_config.static_leases, lease.lease_mac); + static_nip = get_static_nip_by_mac(lease.lease_mac); if (static_nip) { /* NB: we do not add lease even if static_nip == lease.lease_nip. */ continue; } - if (is_nip_reserved(server_config.static_leases, lease.lease_nip)) + if (is_nip_reserved_as_static(lease.lease_nip)) continue; /* NB: add_lease takes "relative time", IOW, @@ -999,7 +1003,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv) } /* Look for a static/dynamic lease */ - static_lease_nip = get_static_nip_by_mac(server_config.static_leases, &packet.chaddr); + static_lease_nip = get_static_nip_by_mac(&packet.chaddr); if (static_lease_nip) { bb_info_msg("found static lease: %x", static_lease_nip); memcpy(&fake_lease.lease_mac, &packet.chaddr, 6); |