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It is approx 1.074 times longer than age timeout specified in seconds. Internal method hw_mod_flm_inf_sta_data_update_get() was updated to perform conversion between age time and internal FPGA scrub T time unit. Fixes: c0d44442b831 ("net/ntnic: add flow aging event") Signed-off-by: Danylo Vodopianov --- .../net/ntnic/nthw/flow_api/hw_mod/hw_mod_flm.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_flm.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_flm.c index 14dd95a150..5cf8264909 100644 --- a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_flm.c +++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_flm.c @@ -969,16 +969,22 @@ int hw_mod_flm_inf_sta_data_update_get(struct flow_api_backend_s *be, enum hw_fl * * (T[7:3] != 0) ? ((8 + T[2:0]) shift-left (T[7:3] - 1)) : T[2:0] * - * The maximum allowed value is 0xEF (127 years). + * The maximum allowed value is 0xEF (137 years). * * Note that this represents a lower bound on the timeout, depending on the flow * scanner interval and overall load, the timeout can be substantially longer. */ uint32_t hw_mod_flm_scrub_timeout_decode(uint32_t t_enc) { - uint8_t t_bits_2_0 = t_enc & 0x07; - uint8_t t_bits_7_3 = (t_enc >> 3) & 0x1F; - return t_bits_7_3 != 0 ? ((8 + t_bits_2_0) << (t_bits_7_3 - 1)) : t_bits_2_0; + uint32_t t_bits_2_0 = t_enc & 0x07; + uint32_t t_bits_7_3 = (t_enc >> 3) & 0x1F; + uint32_t t_dec = t_bits_7_3 != 0 ? ((8U + t_bits_2_0) << (t_bits_7_3 - 1U)) + : t_bits_2_0; + /* convert internal FPGA scrub time unit into seconds, i.e. 2^30/1e9 is + * approx 1.074 sec per internal unit + */ + uint64_t t_sec = (uint64_t)t_dec * 1074UL / 1000UL; + return t_sec > UINT32_MAX ? UINT32_MAX : (uint32_t)t_sec; } uint32_t hw_mod_flm_scrub_timeout_encode(uint32_t t) -- 2.45.0