[dpdk-dev] [PATCH 11/14] net/enic: add the simple version of Tx handler

[Ferruh Yigit]

On 6/28/2018 4:19 AM, John Daley wrote:
> From: Hyong Youb Kim <hyonkim at cisco.com>
> 
> Add a much-simplified handler that works when all offloads are
> disabled, except mbuf fast free. When compared against the default
> handler, under ideal conditions, cycles per packet drop by 60+%.
> 
> By default, the driver tries to use the simple handler. Add a new
> devarg (disable-simple-tx) to allow the user to force-disable this new
> handler.
> 
> The idea of using specialized/simplified handlers is from the Intel
> and Mellanox drivers.

Existing usage does this automatically instead of having a devarg for it, the
logic is use the simple handler when possible, if a feature requested that
simple handler doesn't support switch to handler that supports it, you may
consider same logic.

<...>

> @@ -42,6 +38,7 @@ static const struct rte_pci_id pci_id_enic_map[] = {
>  
>  #define ENIC_DEVARG_DISABLE_OVERLAY "disable-overlay"
>  #define ENIC_DEVARG_IG_VLAN_REWRITE "ig-vlan-rewrite"
> +#define ENIC_DEVARG_DISABLE_SIMPLE_TX "disable-simple-tx"

Same comment with previous one, please document new devargs.