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udhcp: use poll() instead of select()

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function                                             old     new   delta
udhcp_sp_read                                         65      46     -19
udhcp_sp_fd_set                                       79      54     -25
udhcpd_main                                         1530    1482     -48
udhcpc_main                                         2780    2730     -50
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-142)           Total: -142 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-02-16 23:25:44 +01:00
parent dc207f6696
commit 52a515d187
5 changed files with 45 additions and 53 deletions
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4
networking/udhcp/common.h
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@@ -300,8 +300,8 @@ int udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt,
uint32_t dest_nip, int dest_port) FAST_FUNC;
void udhcp_sp_setup(void) FAST_FUNC;
int udhcp_sp_fd_set(fd_set *rfds, int extra_fd) FAST_FUNC;
int udhcp_sp_read(const fd_set *rfds) FAST_FUNC;
void udhcp_sp_fd_set(struct pollfd *pfds, int extra_fd) FAST_FUNC;
int udhcp_sp_read(struct pollfd *pfds) FAST_FUNC;
int udhcp_read_interface(const char *interface, int *ifindex, uint32_t *nip, uint8_t *mac) FAST_FUNC;