hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

i40e: use netdev_rss_key_fill() helper 

Use of well known RSS key increases attack surface.
Switch to a random one, using generic helper so that all
ports share a common key.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2014-11-16 06:23:13 -08:00 committed by David S. Miller
parent c41a4fba4a
commit 22f258a1cc
2 changed files with 6 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -7002,20 +7002,16 @@ static int i40e_setup_misc_vector(struct i40e_pf *pf)
**/
static int i40e_config_rss(struct i40e_pf *pf)
{
/* Set of random keys generated using kernel random number generator */
static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
struct i40e_hw *hw = &pf->hw;
u32 lut = 0;
int i, j;
u64 hena;
u32 reg_val;
/* Fill out hash function seed */
netdev_rss_key_fill(rss_key, sizeof(rss_key));
for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
/* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |

11
drivers/net/ethernet/intel/i40evf/i40evf_main.c
View File

@ -1434,18 +1434,12 @@ static int next_queue(struct i40evf_adapter *adapter, int j)
**/
static void i40evf_configure_rss(struct i40evf_adapter *adapter)
{
u32 rss_key[I40E_VFQF_HKEY_MAX_INDEX + 1];
struct i40e_hw *hw = &adapter->hw;
u32 lut = 0;
int i, j;
u64 hena;
/* Set of random keys generated using kernel random number generator */
static const u32 seed[I40E_VFQF_HKEY_MAX_INDEX + 1] = {
0x794221b4, 0xbca0c5ab, 0x6cd5ebd9, 0x1ada6127,
0x983b3aa1, 0x1c4e71eb, 0x7f6328b2, 0xfcdc0da0,
0xc135cafa, 0x7a6f7e2d, 0xe7102d28, 0x163cd12e,
0x4954b126 };
/* No RSS for single queue. */
if (adapter->num_active_queues == 1) {
wr32(hw, I40E_VFQF_HENA(0), 0);
@ -1454,8 +1448,9 @@ static void i40evf_configure_rss(struct i40evf_adapter *adapter)
}
/* Hash type is configured by the PF - we just supply the key */
netdev_rss_key_fill(rss_key, sizeof(rss_key));
for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
wr32(hw, I40E_VFQF_HKEY(i), seed[i]);
wr32(hw, I40E_VFQF_HKEY(i), rss_key[i]);
/* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
hena = I40E_DEFAULT_RSS_HENA;