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ixgbe: Bounds checking for set_rar, clear_rar, set_vmdq, clear_vmdq 

This change makes it so that out of bounds requests to these calls will
now return IXGBE_ERR_INVALID_ARGUMENT instead of returning 0.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Emil Tantilov 2011-02-17 11:34:58 +00:00 committed by Jeff Kirsher
parent 26d6899ba7
commit c700f4e6f5
3 changed files with 98 additions and 86 deletions
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18
drivers/net/ixgbe/ixgbe_82598.c
View File

@ -858,6 +858,13 @@ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
static s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
{
u32 rar_high;
u32 rar_entries = hw->mac.num_rar_entries;
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
rar_high &= ~IXGBE_RAH_VIND_MASK;
@ -877,15 +884,18 @@ static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
u32 rar_high;
u32 rar_entries = hw->mac.num_rar_entries;
if (rar < rar_entries) {
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
if (rar_high & IXGBE_RAH_VIND_MASK) {
rar_high &= ~IXGBE_RAH_VIND_MASK;
IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
}
} else {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
}
return 0;
}

43
drivers/net/ixgbe/ixgbe_common.c
View File

@ -1239,11 +1239,15 @@ s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
u32 rar_low, rar_high;
u32 rar_entries = hw->mac.num_rar_entries;
/* Make sure we are using a valid rar index range */
if (index >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", index);
return IXGBE_ERR_INVALID_ARGUMENT;
}
/* setup VMDq pool selection before this RAR gets enabled */
hw->mac.ops.set_vmdq(hw, index, vmdq);
/* Make sure we are using a valid rar index range */
if (index < rar_entries) {
/*
* HW expects these in little endian so we reverse the byte
* order from network order (big endian) to little endian
@ -1266,10 +1270,6 @@ s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
} else {
hw_dbg(hw, "RAR index %d is out of range.\n", index);
return IXGBE_ERR_RAR_INDEX;
}
return 0;
}
@ -1287,7 +1287,11 @@ s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
u32 rar_entries = hw->mac.num_rar_entries;
/* Make sure we are using a valid rar index range */
if (index < rar_entries) {
if (index >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", index);
return IXGBE_ERR_INVALID_ARGUMENT;
}
/*
* Some parts put the VMDq setting in the extra RAH bits,
* so save everything except the lower 16 bits that hold part
@ -1298,10 +1302,6 @@ s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
} else {
hw_dbg(hw, "RAR index %d is out of range.\n", index);
return IXGBE_ERR_RAR_INDEX;
}
/* clear VMDq pool/queue selection for this RAR */
hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
@ -2468,7 +2468,12 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
u32 mpsar_lo, mpsar_hi;
u32 rar_entries = hw->mac.num_rar_entries;
if (rar < rar_entries) {
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
@ -2495,10 +2500,6 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
/* was that the last pool using this rar? */
if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
hw->mac.ops.clear_rar(hw, rar);
} else {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
}
done:
return 0;
}
@ -2514,7 +2515,12 @@ s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
u32 mpsar;
u32 rar_entries = hw->mac.num_rar_entries;
if (rar < rar_entries) {
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
if (vmdq < 32) {
mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
mpsar |= 1 << vmdq;
@ -2524,9 +2530,6 @@ s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
mpsar |= 1 << (vmdq - 32);
IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
}
} else {
hw_dbg(hw, "RAR index %d is out of range.\n", rar);
}
return 0;
}

1
drivers/net/ixgbe/ixgbe_type.h
View File

@ -2689,7 +2689,6 @@ struct ixgbe_info {
#define IXGBE_ERR_EEPROM_VERSION -24
#define IXGBE_ERR_NO_SPACE -25
#define IXGBE_ERR_OVERTEMP -26
#define IXGBE_ERR_RAR_INDEX -27
#define IXGBE_ERR_SFP_SETUP_NOT_COMPLETE -30
#define IXGBE_ERR_PBA_SECTION -31
#define IXGBE_ERR_INVALID_ARGUMENT -32