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net: cosmetic: Clean up CDP variables and functions

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Make a thorough pass through all variables and function names contained
within cdp.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 01:41:14 -05:00
committed by Simon Glass
parent 331db5a90f
commit 6aede5b750
5 changed files with 46 additions and 49 deletions
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70
net/cdp.c
View File

@@ -36,17 +36,16 @@ const u8 net_cdp_ethaddr[6] = { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
#define CDP_TIMEOUT 250UL /* one packet every 250ms */
static int CDPSeq;
static int CDPOK;
static int cdp_seq;
static int cdp_ok;
ushort CDPNativeVLAN;
ushort CDPApplianceVLAN;
ushort cdp_native_vlan;
ushort cdp_appliance_vlan;
static const uchar CDP_SNAP_hdr[8] = {
static const uchar cdp_snap_hdr[8] = {
0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
static ushort
CDP_compute_csum(const uchar *buff, ushort len)
static ushort cdp_compute_csum(const uchar *buff, ushort len)
{
ushort csum;
int odd;
@@ -104,8 +103,7 @@ CDP_compute_csum(const uchar *buff, ushort len)
return csum;
}
static int
CDPSendTrigger(void)
static int cdp_send_trigger(void)
{
uchar *pkt;
ushort *s;
@@ -130,8 +128,8 @@ CDPSendTrigger(void)
pkt += ETHER_HDR_SIZE;
/* SNAP header */
memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
pkt += sizeof(CDP_SNAP_hdr);
memcpy((uchar *)pkt, cdp_snap_hdr, sizeof(cdp_snap_hdr));
pkt += sizeof(cdp_snap_hdr);
/* CDP header */
*pkt++ = 0x02; /* CDP version 2 */
@@ -210,8 +208,8 @@ CDPSendTrigger(void)
len = (uchar *)s - ((uchar *)net_tx_packet + ETHER_HDR_SIZE);
et->et_protlen = htons(len);
len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
chksum = CDP_compute_csum((uchar *)net_tx_packet + len,
len = ETHER_HDR_SIZE + sizeof(cdp_snap_hdr);
chksum = cdp_compute_csum((uchar *)net_tx_packet + len,
(uchar *)s - (net_tx_packet + len));
if (chksum == 0)
chksum = 0xFFFF;
@@ -221,19 +219,18 @@ CDPSendTrigger(void)
return 0;
}
static void
CDPTimeout(void)
static void cdp_timeout_handler(void)
{
CDPSeq++;
cdp_seq++;
if (CDPSeq < 3) {
NetSetTimeout(CDP_TIMEOUT, CDPTimeout);
CDPSendTrigger();
if (cdp_seq < 3) {
NetSetTimeout(CDP_TIMEOUT, cdp_timeout_handler);
cdp_send_trigger();
return;
}
/* if not OK try again */
if (!CDPOK)
if (!cdp_ok)
NetStartAgain();
else
net_set_state(NETLOOP_SUCCESS);
@@ -247,15 +244,15 @@ void cdp_receive(const uchar *pkt, unsigned len)
ushort vlan, nvlan;
/* minimum size? */
if (len < sizeof(CDP_SNAP_hdr) + 4)
if (len < sizeof(cdp_snap_hdr) + 4)
goto pkt_short;
/* check for valid CDP SNAP header */
if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
if (memcmp(pkt, cdp_snap_hdr, sizeof(cdp_snap_hdr)) != 0)
return;
pkt += sizeof(CDP_SNAP_hdr);
len -= sizeof(CDP_SNAP_hdr);
pkt += sizeof(cdp_snap_hdr);
len -= sizeof(cdp_snap_hdr);
/* Version of CDP protocol must be >= 2 and TTL != 0 */
if (pkt[0] < 0x02 || pkt[1] == 0)
@@ -269,7 +266,7 @@ void cdp_receive(const uchar *pkt, unsigned len)
printf("**WARNING: CDP packet received with a protocol version "
"%d > 2\n", pkt[0] & 0xff);
if (CDP_compute_csum(pkt, len) != 0)
if (cdp_compute_csum(pkt, len) != 0)
return;
pkt += 4;
@@ -340,28 +337,27 @@ void cdp_receive(const uchar *pkt, unsigned len)
}
}
CDPApplianceVLAN = vlan;
CDPNativeVLAN = nvlan;
cdp_appliance_vlan = vlan;
cdp_native_vlan = nvlan;
CDPOK = 1;
cdp_ok = 1;
return;
pkt_short:
pkt_short:
printf("** CDP packet is too short\n");
return;
}
void
CDPStart(void)
void cdp_start(void)
{
printf("Using %s device\n", eth_get_name());
CDPSeq = 0;
CDPOK = 0;
cdp_seq = 0;
cdp_ok = 0;
CDPNativeVLAN = htons(-1);
CDPApplianceVLAN = htons(-1);
cdp_native_vlan = htons(-1);
cdp_appliance_vlan = htons(-1);
NetSetTimeout(CDP_TIMEOUT, CDPTimeout);
NetSetTimeout(CDP_TIMEOUT, cdp_timeout_handler);
CDPSendTrigger();
cdp_send_trigger();
}