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net: cosmetic: Clean up DHCP variables and functions

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Make a thorough pass through all variables and function names contained
within bootp.c and remove CamelCase and improve naming.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Joe Hershberger 2015-04-08 01:41:09 -05:00 • committed by Simon Glass
parent 85d25e0e76
commit 7044c6bb69
3 changed files with 69 additions and 72 deletions
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119
net/bootp.c
View file

@ -53,7 +53,7 @@
ulong bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; ulong bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE];
unsigned int bootp_num_ids; unsigned int bootp_num_ids;
int BootpTry; int bootp_try;
ulong bootp_start; ulong bootp_start;
ulong bootp_timeout; ulong bootp_timeout;
char net_nis_domain[32] = {0,}; /* Our NIS domain */ char net_nis_domain[32] = {0,}; /* Our NIS domain */
@ -109,14 +109,14 @@ static bool bootp_match_id(ulong id)
return false; return false;
} }
static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) static int check_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len)
{ {
struct Bootp_t *bp = (struct Bootp_t *) pkt; struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
int retval = 0; int retval = 0;
if (dest != PORT_BOOTPC || src != PORT_BOOTPS) if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
retval = -1; retval = -1;
else if (len < sizeof(struct Bootp_t) - OPT_FIELD_SIZE) else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE)
retval = -2; retval = -2;
else if (bp->bp_op != OP_BOOTREQUEST && else if (bp->bp_op != OP_BOOTREQUEST &&
bp->bp_op != OP_BOOTREPLY && bp->bp_op != OP_BOOTREPLY &&
@ -139,7 +139,7 @@ static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
/* /*
* Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
*/ */
static void BootpCopyNetParams(struct Bootp_t *bp) static void store_net_params(struct bootp_hdr *bp)
{ {
#if !defined(CONFIG_BOOTP_SERVERIP) #if !defined(CONFIG_BOOTP_SERVERIP)
struct in_addr tmp_ip; struct in_addr tmp_ip;
@ -177,12 +177,12 @@ static int truncate_sz(const char *name, int maxlen, int curlen)
#if !defined(CONFIG_CMD_DHCP) #if !defined(CONFIG_CMD_DHCP)
static void BootpVendorFieldProcess(u8 *ext) static void bootp_process_vendor_field(u8 *ext)
{ {
int size = *(ext + 1); int size = *(ext + 1);
debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
*(ext + 1)); *(ext + 1));
net_boot_file_expected_size_in_blocks = 0; net_boot_file_expected_size_in_blocks = 0;
@ -285,7 +285,7 @@ static void BootpVendorFieldProcess(u8 *ext)
} }
} }
static void BootpVendorProcess(u8 *ext, int size) static void bootp_process_vendor(u8 *ext, int size)
{ {
u8 *end = ext + size; u8 *end = ext + size;
@ -299,7 +299,7 @@ static void BootpVendorProcess(u8 *ext, int size)
ext += ext[1] + 2; ext += ext[1] + 2;
if (ext <= end) if (ext <= end)
BootpVendorFieldProcess(opt); bootp_process_vendor_field(opt);
} }
} }
@ -335,15 +335,15 @@ static void BootpVendorProcess(u8 *ext, int size)
static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
unsigned src, unsigned len) unsigned src, unsigned len)
{ {
struct Bootp_t *bp; struct bootp_hdr *bp;
debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
src, dest, len, sizeof(struct Bootp_t)); src, dest, len, sizeof(struct bootp_hdr));
bp = (struct Bootp_t *)pkt; bp = (struct bootp_hdr *)pkt;
/* Filter out pkts we don't want */ /* Filter out pkts we don't want */
if (BootpCheckPkt(pkt, dest, src, len)) if (check_packet(pkt, dest, src, len))
return; return;
/* /*
@ -353,11 +353,11 @@ static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
#endif #endif
BootpCopyNetParams(bp); /* Store net parameters from reply */ store_net_params(bp); /* Store net parameters from reply */
/* Retrieve extended information (we must parse the vendor area) */ /* Retrieve extended information (we must parse the vendor area) */
if (NetReadLong((ulong *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) if (NetReadLong((ulong *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
BootpVendorProcess((uchar *)&bp->bp_vend[4], len); bootp_process_vendor((uchar *)&bp->bp_vend[4], len);
NetSetTimeout(0, (thand_f *)0); NetSetTimeout(0, (thand_f *)0);
bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop");
@ -371,8 +371,7 @@ static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
/* /*
* Timeout on BOOTP/DHCP request. * Timeout on BOOTP/DHCP request.
*/ */
static void static void bootp_timeout_handler(void)
BootpTimeout(void)
{ {
ulong time_taken = get_timer(bootp_start); ulong time_taken = get_timer(bootp_start);
@ -388,8 +387,8 @@ BootpTimeout(void)
bootp_timeout *= 2; bootp_timeout *= 2;
if (bootp_timeout > 2000) if (bootp_timeout > 2000)
bootp_timeout = 2000; bootp_timeout = 2000;
NetSetTimeout(bootp_timeout, BootpTimeout); NetSetTimeout(bootp_timeout, bootp_timeout_handler);
BootpRequest(); bootp_request();
} }
} }
@ -649,25 +648,24 @@ static int bootp_extended(u8 *e)
} }
#endif #endif
void BootpReset(void) void bootp_reset(void)
{ {
bootp_num_ids = 0; bootp_num_ids = 0;
BootpTry = 0; bootp_try = 0;
bootp_start = get_timer(0); bootp_start = get_timer(0);
bootp_timeout = 250; bootp_timeout = 250;
} }
void void bootp_request(void)
BootpRequest(void)
{ {
uchar *pkt, *iphdr; uchar *pkt, *iphdr;
struct Bootp_t *bp; struct bootp_hdr *bp;
int extlen, pktlen, iplen; int extlen, pktlen, iplen;
int eth_hdr_size; int eth_hdr_size;
#ifdef CONFIG_BOOTP_RANDOM_DELAY #ifdef CONFIG_BOOTP_RANDOM_DELAY
ulong rand_ms; ulong rand_ms;
#endif #endif
ulong BootpID; ulong bootp_id;
struct in_addr zero_ip; struct in_addr zero_ip;
struct in_addr bcast_ip; struct in_addr bcast_ip;
@ -677,11 +675,11 @@ BootpRequest(void)
#endif #endif
#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
if (BootpTry == 0) if (bootp_try == 0)
srand_mac(); srand_mac();
if (BootpTry <= 2) /* Start with max 1024 * 1ms */ if (bootp_try <= 2) /* Start with max 1024 * 1ms */
rand_ms = rand() >> (22 - BootpTry); rand_ms = rand() >> (22 - bootp_try);
else /* After 3rd BOOTP request max 8192 * 1ms */ else /* After 3rd BOOTP request max 8192 * 1ms */
rand_ms = rand() >> 19; rand_ms = rand() >> 19;
@ -690,7 +688,7 @@ BootpRequest(void)
#endif /* CONFIG_BOOTP_RANDOM_DELAY */ #endif /* CONFIG_BOOTP_RANDOM_DELAY */
printf("BOOTP broadcast %d\n", ++BootpTry); printf("BOOTP broadcast %d\n", ++bootp_try);
pkt = net_tx_packet; pkt = net_tx_packet;
memset((void *)pkt, 0, PKTSIZE); memset((void *)pkt, 0, PKTSIZE);
@ -705,11 +703,11 @@ BootpRequest(void)
* C. Hallinan, DS4.COM, Inc. * C. Hallinan, DS4.COM, Inc.
*/ */
/* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
sizeof (struct Bootp_t)); */ sizeof (struct bootp_hdr)); */
iphdr = pkt; /* We need this later for net_set_udp_header() */ iphdr = pkt; /* We need this later for net_set_udp_header() */
pkt += IP_UDP_HDR_SIZE; pkt += IP_UDP_HDR_SIZE;
bp = (struct Bootp_t *)pkt; bp = (struct bootp_hdr *)pkt;
bp->bp_op = OP_BOOTREQUEST; bp->bp_op = OP_BOOTREQUEST;
bp->bp_htype = HWT_ETHER; bp->bp_htype = HWT_ETHER;
bp->bp_hlen = HWL_ETHER; bp->bp_hlen = HWL_ETHER;
@ -735,14 +733,14 @@ BootpRequest(void)
* Bootp ID is the lower 4 bytes of our ethernet address * Bootp ID is the lower 4 bytes of our ethernet address
* plus the current time in ms. * plus the current time in ms.
*/ */
BootpID = ((ulong)net_ethaddr[2] << 24) bootp_id = ((ulong)net_ethaddr[2] << 24)
| ((ulong)net_ethaddr[3] << 16) | ((ulong)net_ethaddr[3] << 16)
| ((ulong)net_ethaddr[4] << 8) | ((ulong)net_ethaddr[4] << 8)
| (ulong)net_ethaddr[5]; | (ulong)net_ethaddr[5];
BootpID += get_timer(0); bootp_id += get_timer(0);
BootpID = htonl(BootpID); bootp_id = htonl(bootp_id);
bootp_add_id(BootpID); bootp_add_id(bootp_id);
NetCopyLong(&bp->bp_id, &BootpID); NetCopyLong(&bp->bp_id, &bootp_id);
/* /*
* Calculate proper packet lengths taking into account the * Calculate proper packet lengths taking into account the
@ -752,7 +750,7 @@ BootpRequest(void)
pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
bcast_ip.s_addr = 0xFFFFFFFFL; bcast_ip.s_addr = 0xFFFFFFFFL;
net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
NetSetTimeout(bootp_timeout, BootpTimeout); NetSetTimeout(bootp_timeout, bootp_timeout_handler);
#if defined(CONFIG_CMD_DHCP) #if defined(CONFIG_CMD_DHCP)
dhcp_state = SELECTING; dhcp_state = SELECTING;
@ -764,7 +762,7 @@ BootpRequest(void)
} }
#if defined(CONFIG_CMD_DHCP) #if defined(CONFIG_CMD_DHCP)
static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) static void dhcp_process_options(uchar *popt, struct bootp_hdr *bp)
{ {
uchar *end = popt + BOOTP_HDR_SIZE; uchar *end = popt + BOOTP_HDR_SIZE;
int oplen, size; int oplen, size;
@ -851,7 +849,7 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp)
* to me * to me
*/ */
printf("*** WARNING: using vendor " printf("*** WARNING: using vendor "
"optional boot file\n"); "optional boot file\n");
memcpy(bp->bp_file, popt + 2, size); memcpy(bp->bp_file, popt + 2, size);
bp->bp_file[size] = '\0'; bp->bp_file[size] = '\0';
} }
@ -862,14 +860,14 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp)
break; break;
#endif #endif
printf("*** Unhandled DHCP Option in OFFER/ACK:" printf("*** Unhandled DHCP Option in OFFER/ACK:"
" %d\n", *popt); " %d\n", *popt);
break; break;
} }
popt += oplen + 2; /* Process next option */ popt += oplen + 2; /* Process next option */
} }
} }
static int DhcpMessageType(unsigned char *popt) static int dhcp_message_type(unsigned char *popt)
{ {
if (NetReadLong((ulong *)popt) != htonl(BOOTP_VENDOR_MAGIC)) if (NetReadLong((ulong *)popt) != htonl(BOOTP_VENDOR_MAGIC))
return -1; return -1;
@ -883,17 +881,17 @@ static int DhcpMessageType(unsigned char *popt)
return -1; return -1;
} }
static void DhcpSendRequestPkt(struct Bootp_t *bp_offer) static void dhcp_send_request_packet(struct bootp_hdr *bp_offer)
{ {
uchar *pkt, *iphdr; uchar *pkt, *iphdr;
struct Bootp_t *bp; struct bootp_hdr *bp;
int pktlen, iplen, extlen; int pktlen, iplen, extlen;
int eth_hdr_size; int eth_hdr_size;
struct in_addr offered_ip; struct in_addr offered_ip;
struct in_addr zero_ip; struct in_addr zero_ip;
struct in_addr bcast_ip; struct in_addr bcast_ip;
debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n"); debug("dhcp_send_request_packet: Sending DHCPREQUEST\n");
pkt = net_tx_packet; pkt = net_tx_packet;
memset((void *)pkt, 0, PKTSIZE); memset((void *)pkt, 0, PKTSIZE);
@ -903,7 +901,7 @@ static void DhcpSendRequestPkt(struct Bootp_t *bp_offer)
iphdr = pkt; /* We'll need this later to set proper pkt size */ iphdr = pkt; /* We'll need this later to set proper pkt size */
pkt += IP_UDP_HDR_SIZE; pkt += IP_UDP_HDR_SIZE;
bp = (struct Bootp_t *)pkt; bp = (struct bootp_hdr *)pkt;
bp->bp_op = OP_BOOTREQUEST; bp->bp_op = OP_BOOTREQUEST;
bp->bp_htype = HWT_ETHER; bp->bp_htype = HWT_ETHER;
bp->bp_hlen = HWL_ETHER; bp->bp_hlen = HWL_ETHER;
@ -954,17 +952,17 @@ static void DhcpSendRequestPkt(struct Bootp_t *bp_offer)
static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
unsigned src, unsigned len) unsigned src, unsigned len)
{ {
struct Bootp_t *bp = (struct Bootp_t *)pkt; struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
src, dest, len, dhcp_state); src, dest, len, dhcp_state);
/* Filter out pkts we don't want */ /* Filter out pkts we don't want */
if (BootpCheckPkt(pkt, dest, src, len)) if (check_packet(pkt, dest, src, len))
return; return;
debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state:" debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: "
" %d\n", src, dest, len, dhcp_state); "%d\n", src, dest, len, dhcp_state);
switch (dhcp_state) { switch (dhcp_state) {
case SELECTING: case SELECTING:
@ -986,10 +984,10 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
if (NetReadLong((ulong *)&bp->bp_vend[0]) == if (NetReadLong((ulong *)&bp->bp_vend[0]) ==
htonl(BOOTP_VENDOR_MAGIC)) htonl(BOOTP_VENDOR_MAGIC))
DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); dhcp_process_options((u8 *)&bp->bp_vend[4], bp);
NetSetTimeout(5000, BootpTimeout); NetSetTimeout(5000, bootp_timeout_handler);
DhcpSendRequestPkt(bp); dhcp_send_request_packet(bp);
#ifdef CONFIG_SYS_BOOTFILE_PREFIX #ifdef CONFIG_SYS_BOOTFILE_PREFIX
} }
#endif /* CONFIG_SYS_BOOTFILE_PREFIX */ #endif /* CONFIG_SYS_BOOTFILE_PREFIX */
@ -999,17 +997,17 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
case REQUESTING: case REQUESTING:
debug("DHCP State: REQUESTING\n"); debug("DHCP State: REQUESTING\n");
if (DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK) { if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {
if (NetReadLong((ulong *)&bp->bp_vend[0]) == if (NetReadLong((ulong *)&bp->bp_vend[0]) ==
htonl(BOOTP_VENDOR_MAGIC)) htonl(BOOTP_VENDOR_MAGIC))
DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); dhcp_process_options((u8 *)&bp->bp_vend[4], bp);
/* Store net params from reply */ /* Store net params from reply */
BootpCopyNetParams(bp); store_net_params(bp);
dhcp_state = BOUND; dhcp_state = BOUND;
printf("DHCP client bound to address %pI4 (%lu ms)\n", printf("DHCP client bound to address %pI4 (%lu ms)\n",
&net_ip, get_timer(bootp_start)); &net_ip, get_timer(bootp_start));
bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
"bootp_stop"); "bootp_stop");
net_auto_load(); net_auto_load();
return; return;
@ -1022,11 +1020,10 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
puts("DHCP: INVALID STATE\n"); puts("DHCP: INVALID STATE\n");
break; break;
} }
} }
void DhcpRequest(void) void dhcp_request(void)
{ {
BootpRequest(); bootp_request();
} }
#endif /* CONFIG_CMD_DHCP */ #endif /* CONFIG_CMD_DHCP */

14
net/bootp.h
View file

@ -29,7 +29,7 @@ extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */
#define OPT_FIELD_SIZE 64 #define OPT_FIELD_SIZE 64
#endif #endif
struct Bootp_t { struct bootp_hdr {
uchar bp_op; /* Operation */ uchar bp_op; /* Operation */
# define OP_BOOTREQUEST 1 # define OP_BOOTREQUEST 1
# define OP_BOOTREPLY 2 # define OP_BOOTREPLY 2
@ -51,7 +51,7 @@ struct Bootp_t {
char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */ char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */
}; };
#define BOOTP_HDR_SIZE sizeof(struct Bootp_t) #define BOOTP_HDR_SIZE sizeof(struct bootp_hdr)
/**********************************************************************/ /**********************************************************************/
/* /*
@ -59,16 +59,16 @@ struct Bootp_t {
*/ */
/* bootp.c */ /* bootp.c */
extern ulong BootpID; /* ID of cur BOOTP request */ extern ulong bootp_id; /* ID of cur BOOTP request */
extern int BootpTry; extern int bootp_try;
/* Send a BOOTP request */ /* Send a BOOTP request */
extern void BootpReset(void); void bootp_reset(void);
extern void BootpRequest(void); void bootp_request(void);
/****************** DHCP Support *********************/ /****************** DHCP Support *********************/
extern void DhcpRequest(void); void dhcp_request(void);
/* DHCP States */ /* DHCP States */
typedef enum { INIT, typedef enum { INIT,

8
net/net.c
View file

@ -381,16 +381,16 @@ restart:
#endif #endif
#if defined(CONFIG_CMD_DHCP) #if defined(CONFIG_CMD_DHCP)
case DHCP: case DHCP:
BootpReset(); bootp_reset();
net_ip.s_addr = 0; net_ip.s_addr = 0;
DhcpRequest(); /* Basically same as BOOTP */ dhcp_request(); /* Basically same as BOOTP */
break; break;
#endif #endif
case BOOTP: case BOOTP:
BootpReset(); bootp_reset();
net_ip.s_addr = 0; net_ip.s_addr = 0;
BootpRequest(); bootp_request();
break; break;
#if defined(CONFIG_CMD_RARP) #if defined(CONFIG_CMD_RARP)