diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-17 10:24:53 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-17 10:24:53 +1000 |
| commit | 492b057c426e4aa747484958e18e9da29003985d (patch) | |
| tree | 34e08c24618688d8bcc190523028b5f94cce0c0b /include/linux/mii.h | |
| parent | 313485175da221c388f6a8ecf4c30062ba9bea17 (diff) | |
| parent | 300df7dc89cc276377fc020704e34875d5c473b6 (diff) | |
Merge commit 'origin/master' into next
Diffstat (limited to 'include/linux/mii.h')
| -rw-r--r-- | include/linux/mii.h | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/include/linux/mii.h b/include/linux/mii.h index ad748588faf..359fba88027 100644 --- a/include/linux/mii.h +++ b/include/linux/mii.h @@ -240,6 +240,22 @@ static inline unsigned int mii_duplex (unsigned int duplex_lock, } /** + * mii_advertise_flowctrl - get flow control advertisement flags + * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both) + */ +static inline u16 mii_advertise_flowctrl(int cap) +{ + u16 adv = 0; + + if (cap & FLOW_CTRL_RX) + adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; + if (cap & FLOW_CTRL_TX) + adv ^= ADVERTISE_PAUSE_ASYM; + + return adv; +} + +/** * mii_resolve_flowctrl_fdx * @lcladv: value of MII ADVERTISE register * @rmtadv: value of MII LPA register @@ -250,18 +266,12 @@ static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) { u8 cap = 0; - if (lcladv & ADVERTISE_PAUSE_CAP) { - if (lcladv & ADVERTISE_PAUSE_ASYM) { - if (rmtadv & LPA_PAUSE_CAP) - cap = FLOW_CTRL_TX | FLOW_CTRL_RX; - else if (rmtadv & LPA_PAUSE_ASYM) - cap = FLOW_CTRL_RX; - } else { - if (rmtadv & LPA_PAUSE_CAP) - cap = FLOW_CTRL_TX | FLOW_CTRL_RX; - } - } else if (lcladv & ADVERTISE_PAUSE_ASYM) { - if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM)) + if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) { + cap = FLOW_CTRL_TX | FLOW_CTRL_RX; + } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) { + if (lcladv & ADVERTISE_PAUSE_CAP) + cap = FLOW_CTRL_RX; + else if (rmtadv & ADVERTISE_PAUSE_CAP) cap = FLOW_CTRL_TX; } |