[dpdk-dev] [EXT] [PATCH 1/2] ipsec: add transmit segmentation offload support

[Nicolau, Radu]

Hi Akhil, I will address all issues except the last one with a comment 
below:

>> -	n = num;
>> -	sqn = esn_outb_update_sqn(sa, &n);
>> -	if (n != num)
>> +	n_sqn = nb_segs_t;
>> +	sqn = esn_outb_update_sqn(sa, &n_sqn);
>> +	if (n_sqn != nb_segs_t) {
>>   		rte_errno = EOVERFLOW;
> If it is an error condition, shouldn't we return.
> Also, I do not see rte_errno being checked anywhere in the app/test or ipsec-secgw.
We are sending all packets that don't cause a SN overflow, and we set 
the error flag. The user will see that not all packets were sent and and 
rte_errno, and this is the behaviour that was in place before this patch.
>
>> +		/* if there are segmented packets find out how many can be
>> +		 * sent until overflow occurs
>> +		 */
>> +		if (nb_segs_t > num) { /* there is at least 1 */
>> +			uint32_t seg_cnt = 0;
>> +			for (i = 0; i < num && seg_cnt < n_sqn; i++)
>> +				seg_cnt += nb_segs[i];
>> +			num = i - 1;
>> +		} else {
>> +			num = n_sqn; /* no segmented packets */
>> +		}
>> +	}
>>