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* Unconditionally turn on SIOCGI2C probing for all interfaces

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on "ifconfig -v". I've seen no measurable timing difference
    for doing additional SIOCGI2C call for system with 4k vlans.
* Determine appropriate handler (SFP/QSFP) by reading identification
    byte (which is the same for both SFF-8472 and SFF-8436) instead
   of checking driver name.

MFC with:	r270064
Sponsored by:	Yandex LLC
This commit is contained in:
Alexander V. Chernikov 2014-09-03 11:07:49 +00:00
parent 6b17688b56
commit 5c02a66b2b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=271014
1 changed files with 17 additions and 11 deletions
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28
sbin/ifconfig/sfp.c
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@ -753,25 +753,31 @@ void
sfp_status(int s, struct ifreq *ifr, int verbose)
{
struct i2c_info ii;
uint8_t id_byte;
memset(&ii, 0, sizeof(ii));
/* Prepare necessary into to pass to NIC handler */
ii.s = s;
ii.ifr = ifr;
ii.f = read_i2c_generic;
/*
* Check if we have i2c support for particular driver.
* TODO: Determine driver by original name.
* Try to read byte 0 from i2c:
* Both SFF-8472 and SFF-8436 use it as
* 'identification byte'
*/
if (strncmp(ifr->ifr_name, "ix", 2) == 0) {
ii.f = read_i2c_generic;
print_sfp_status(&ii, verbose);
} else if (strncmp(ifr->ifr_name, "cxl", 3) == 0) {
ii.port_id = atoi(&ifr->ifr_name[3]);
ii.f = read_i2c_generic;
ii.cfd = -1;
print_qsfp_status(&ii, verbose);
} else
id_byte = 0;
ii.f(&ii, SFF_8472_BASE, SFF_8472_ID, 1, (caddr_t)&id_byte);
if (ii.error != 0)
return;
switch (id_byte) {
case SFF_8024_ID_QSFP:
case SFF_8024_ID_QSFPPLUS:
print_qsfp_status(&ii, verbose);
break;
default:
print_sfp_status(&ii, verbose);
};
}