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Szmigiero" Subject: [PATCH v4 05/16] migration/multifd: Introduce MultiFDSendData Date: Fri, 23 Aug 2024 14:39:00 -0300 Message-Id: <20240823173911.6712-6-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240823173911.6712-1-farosas@suse.de> References: <20240823173911.6712-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.986]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,suse.de:mid]; RCVD_TLS_ALL(0.00)[] X-Spam-Score: -2.80 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:2; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1724434830221116600 Content-Type: text/plain; charset="utf-8" Add a new data structure to replace p->pages in the multifd channel. This new structure will hide the multifd payload type behind an union, so we don't need to add a new field to the channel each time we want to handle a different data type. This also allow us to keep multifd_send_pages() as is, without needing to complicate the pointer switching. Reviewed-by: Peter Xu Signed-off-by: Fabiano Rosas --- migration/multifd.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/migration/multifd.h b/migration/multifd.h index 660a9882c2..7bb4a2cbc4 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -17,6 +17,7 @@ #include "ram.h" =20 typedef struct MultiFDRecvData MultiFDRecvData; +typedef struct MultiFDSendData MultiFDSendData; =20 bool multifd_send_setup(void); void multifd_send_shutdown(void); @@ -88,6 +89,31 @@ struct MultiFDRecvData { off_t file_offset; }; =20 +typedef enum { + MULTIFD_PAYLOAD_NONE, + MULTIFD_PAYLOAD_RAM, +} MultiFDPayloadType; + +typedef union MultiFDPayload { + MultiFDPages_t ram; +} MultiFDPayload; + +struct MultiFDSendData { + MultiFDPayloadType type; + MultiFDPayload u; +}; + +static inline bool multifd_payload_empty(MultiFDSendData *data) +{ + return data->type =3D=3D MULTIFD_PAYLOAD_NONE; +} + +static inline void multifd_set_payload_type(MultiFDSendData *data, + MultiFDPayloadType type) +{ + data->type =3D type; +} + typedef struct { /* Fields are only written at creating/deletion time */ /* No lock required for them, they are read only */ --=20 2.35.3